STKO for OpenSees

Frequently Asked Questions


STKO Trial

o Yes! You absolutely can try STKO for FREE before deciding to purchase the software. Click here to be taken to our download page, where you will need to create a user account to activate your Evaluation License. Once you have created an account and entered your new credentials, you will be taken to your user area, where you will be able to download your trial version. Activation should be automatic, if not, simply insert the customerID (listed in your user area) when prompted by the software during installation.

o The Evaluation License (i.e., free trial) lasts for 30 days. After which, it will automatically convert into the FREE version. If you would like to purchase a full license, discover our price solutions for Academic/Research licenses here or discover our commercial licensing options here.

STKO Free Academic License

o The Free Academic version is intended to support students and professors in the learning/teaching process. Users intending to publish research or use the software for commercial purposes must purchase a license. The Free Academic license includes all available features and modules of the software, but does have some limitations. Please see the comparison chart on the purchase page.

o From now on, when your trial version expires it will automatically become a Free Academic License without you needing to do anything. If your trial expired already, you can simply log into your user area and click the Start button to reactivate your ID.

License Questions

o Of course! Just log in to your user area and download the latest version. As STKO paid licenses are subscription licenses, all updates and version changes are included.

o You certainly can!

o Yes, you will be able to read, use, and edit any files and models you made during your trial period, even if you didn’t immediately purchase a license.

o Yes you can, however, your STKO license can only be used by one device at a time. In order to use it on a different device or computer, you must first detach the license from the device it is associated with, and then download and install STKO on the new device.

o First, open STKO. Navigate to the toolbar at the top of the page and click Help. A drop-down menu will open, from this menu, select System Info. This will open the System Info window that contains the expiration date of your license and your customerID. You will see a button at the bottom of the window that says Detach License from this machine. In order to detach the license, simply click the button to detach the license.

detach license 1
detach license 2

Then, in order to associate your license with a new device, go to your user area, download STKO, and install it on the new device.

o Once you download STKO, that customer ID will lock to your computer. In order to switch to the new customer ID, you will need to contact us and give us the customer ID associated to the trial version, and the new customer ID of the paid license. We will create a specialized tool that will allow you to switch the license.

o Our webpage now hosts an eCommerce application that allows users to pay through PayPal. Add the type of license and number of licenses you wish to purchase to your cart and select whether you prefer to pay with PayPal, credit card, or debit card. We also support payment by bank transfer, but in that case, the license will not be activated until we have received the payment.

o Yes, in order to purchase an Academic or Educational License, we must receive proof of academic status. We understand that universities around the world have different systems, so we are flexible on what we will accept as proof. It could be a copy of a current student or staff ID, a copy of your class list, a link to a university webpage staff or student directory, etc. During the purchase process, we also require you to download, sign, and email back to us the Declaration of Academic Use form, in which you declare that you will not use the software for commercial purposes. We will not activate your license until we receive the signed declaration.
o We also recognize that there maybe private individuals who don’t want a commercial license but may not be associated with a university. We ask that these individuals contact us and explain their situation. We can make exceptions under certain circumstances.

o We understand that all universities have different systems and require different documentation. We do our best to provide students and staff the specific documentation they need to the best of our abilities. Please contact us, describing what you need as specifically as possible.

o As STKO is a software download, all materials, licenses, and receipts are issued electronically. Nothing is shipped. We do, however, ask you to provide a physical billing address during the payment process so we can issue an official invoice. The invoice will, of course, be sent to you electronically. We will never send you anything physically.

o For commercial licenses, we ask that you contact us, describing your needs and the number of licenses you wish to purchase. The documentation process is different for commercial licenses, which is why we are not yet able to support eCommerce for commercial licenses.

o Our academic licenses are already significantly discounted to make them as affordable as possible for students and professors.

o All you have to do is open STKO, navigate to the toolbar at the top of the page, and click Help. A drop-down menu will open, from this menu, select System Info. This will open the System Info window that contains the expiration date of your license and your customerID.

o Yes, please contact us and explain your needs. We can tailor the software to your specifications.

Troubleshooting/Modeling problems

o To learn how to install STKO and learn some basic error codes you might run into, check out our Installation Guide.

o To run STKO, you will need:

  • a 64-bit processor architecture
  • 4 GB memory
  • At least 500 MB disk space available for installation
  • Video Card supporting at least OpenGL 3.0 or higher and GLSL (OpenGL Shading Language) 1.20 or higher
  • o Try writing in the STKO User Forum. There, STKO users can engage and help other users with issues they may be having and collaborate on ideas. It should be your first stop for help. If you have a commercial license, you can also contact us directly.

    o Yes, you can either download it from our webpage or view it in STKO. Click Help on the toolbar in STKO and then click Manual. It will open as a pdf file.

    o STKO is a Graphic User Interface for OpenSees; however, it does not include the OpenSees software. If you can’t select a solver, the probable cause of the problem is that you haven’t installed OpenSees. There are several free version of OpenSees offered by universities around the world. To see a list of universities and other organizations that offer OpenSees downloads, click here.

    o Error 210026 is a tricky error to solve. What this means is that there is a problem with your system's clock. Our licenses validate their expiration dates by using your device's time settings. If the system sees that the time is not accurate, it will not connect. First, please check that the system's clock is set to synchronize automatically (you can find steps around the web, but Chron has some clear ones). Then, if that doesn't fix the problem, uninstall and then reinstall STKO.
    Then, Try changing your system's clock settings to automatic to sync the time and date with the online server. You can find guides on how to do this by doing a quick Google search
    If that doesn't fix the problem, there may be something interfering with the clock. Try scanning your computer for malware which can maliciously change the time settings. Cracked software or other non-licensed programs could also be tampering with the time. If you are using a computer supplied by your workplace or school talk to the IT personnel.
    If you still continue to have problems, please contact us and send us the diagnostic files mentioned in the FAQ question on diagnostic files.

    o This error means, "Error in network communication. Check the YPS address (in the configuration file), internet connection and proxy settings."
    This particular error is caused by a particular update of Microsoft which creates problems reading our licensing software's (sentinel ems) security key. This is a known bug with certain Microsoft 7 updates: https://sentineltechsupport.gemalto.com/2013/01/yps-communication-issue-on-windows/
    However, as Microsoft windows 7 is no longer supported, the relevant articles on the particular update that causes the issue (kb 2661254) are no longer accessible on the Microsoft website. You have a few options. You can try to roll back the update to a previous version, however, it’s possible that more than one Windows 7 update contains that particular packet and it may be difficult to find a version without it.
    What we would recommend is upgrading to Windows 10. This was possible for free in the past, and it may still be, you can read about it here.
    If you aren't using Windows 7, or another old version of Windows, let us know. Also, check if programs like VPNs or proxies are being run and blocking the server connection.
    If you still continue to have problems, please contact us and send us the diagnostic files mentioned in the FAQ question on diagnostic files.

    o Error 1027 likely means that you did not install STKO as the administrator. Try downloading STKO again and running the installation as the computer's administrator.
    It can also occur if you are using a university network and your computer isn’t correctly configured.
    If you still continue to have problems, please contact us and send us the diagnostic files mentioned in the FAQ question on diagnostic files.

    o An error code of 100027 means, "Failed to set proxy while communicating with the server." This means that when STKO attempts to validate your customer ID online, the information is blocked. Potentially, if you are using a VPN or proxy server to connect to the internet. Try turning off the VPN or changing its settings to see if this fixes the error.

    If you still continue to have problems, please contact us and send us the diagnostic files mentioned in the FAQ question on diagnostic files.

    o This error is caused by a mismatch in fingerprint ID. Please contact us and send us the diagnostic files mentioned in the FAQ question on diagnostic files and we will create a tool that resets the fingerprint IDs.

    o When you install STKO, there is a Python that comes with it, with all the necessary libraries already installed (.dll files). What can be happening on your computer is that STKO is calling a Python that does not have the necessary libraries. You can try to do the following things:
    - if you have Anaconda installed, do uninstall it, it can happen that it will force specific dll to be called by from specific folder and that can mess up with STKO
    - if you go in the Path of the environment variables on your computer, you can check if python is there, if so erase it
    - uninstall and re-install STKO and also erase all the files that are left behind before the re-installation (you can use a simple free software to do that, search "clean uninstall")
    - retry with the latest version of STKO, if the problem persist, you can try and force the installation of the dll, by typing python pip install PySide2 in the windows console
    If you still continue to have problems, please contact us and send us the diagnostic files mentioned in the FAQ question on diagnostic files.

    o Sometimes this error can happen if you are trying to install STKO while you already have the program open. Please make sure to close the program before you try to install the new version. If you do have the program closed when you are attempting this, please try to uninstall STKO completely before downloading and running the installer.

    o If you see this error window, or if STKO crashes upon opening, the likely culprit is your graphics card or graphics settings. Some graphics cards don't support the minimum requirements of STKO. If you are using a laptop, your computer may come with two graphics cards: an integrated one (energy saving), and an Nvidia (or other type). You should attempt to change the graphic card accessed when you open STKO by following one of these two procedures:
    1. Right-click on the STKO icon and select Run with graphics processor -> High-performance NVIDIA processor (default).
    2. Right-click on the desktop and run NVIDIA Control Panel -> Manage 3D settings -> ADD -> STKO.exe -> Add Selected Program -> Apply. Note that method 1 is faster, but you will need to do it every time you want to run STKO. Method 2 is slower, but you will only have to do it once.
    If you still continue to have problems, please contact us and send us the diagnostic files mentioned in the FAQ question on diagnostic files.

    o If you see this error, which, in its extended version, will look something like this:
    Command: SavePreDocument Serialization exception: Cannot create file: "C:/Users/ME/Nextcloud/CSIC/DitEx/steps/Informe de cálculo/Modelo/ModelSTKO.scd".
    File: "..\..\MpcCore\MpcCoreApp\Serialization\MpcCaeDocumentSerializer.cpp
    Function: save (Line: 98)
    error #0 C:\autotest\hdf5110-StdRelease-code-10vs14\build\hdfsrc\src\H5F.c in H5Fcreate(): line 491.
    class: HDF5
    major: File accessibilty
    minor: Unable to open file
    error #1 C:\autotest\hdf5110-StdRelease-code-10vs14\build\hdfsrc\src\H5Fint.c in H5F_open(): line 1247.
    class: HDF5
    major: File accessibilty
    minor: Unable to open file
    error #2 C:\autotest\hdf5110-StdRelease-code-10vs14\build\hdfsrc\src\H5FD.c in H5FD_open(): line 809.
    class: HDF5
    major: Virtual File Layer
    minor: Unable to initialize object
    error #3 C:\autotest\hdf5110-StdRelease-code-10vs14\build\hdfsrc\src\H5FDsec2.c in H5FD_sec2_open(): line 346.
    class: HDF5
    major: File accessibilty
    minor: Unable to open file
    This error seems very complex, but the solution is incredibly simple. All it means is that somewhere in the file path, there is a special character (in this example, the a with the accent in cálculo). You will need to modify the file path so that it no longer contains special characters. If you still continue to have problems, please contact us and send us the diagnostic files mentioned in the FAQ question on diagnostic files.

    o To help us see exactly whats happening when your computer is trying to access the license, the program creates several files when it is launched. Anytime you contact us for a problem regarding a validation error, please send us the licenseSetup.log file, which can be found in the STKO installation directory (a likely file path for the directory may be something similar to C:\Program Files\STKO), and the STKOerrorFeature.txt and the STKOlicense.txt files, which can be found in th the AppData folder (probably in a file path similar to C:\Users\YOURUSER\AppData\Local\ASDEA Software Technology\STKO).




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