invalid subsystem handle

[fredo123456]

hello everyone, i have the following problem with dasylab: when i want to start a measurement, the error message invalid subsystem handle appears and dasylab hangs up and can only be closed via the task manager. Sometimes the problem goes away after a few restarts, on other days I can't measure at all.  I know that the code I want to run works.

Thanks for your replys

[john@MCC]

Please tell me the device's make/model and what you're trying to do.

[fredo123456]

I am experiencing an issue with DASYLab 2020 when trying to run a program that has worked many times before with the same setup.

When I open the program, I first receive an error message stating that the saved timebase is not available. After clicking "OK," I get another error saying that the saved module DT9837 is not available and that the schematic could not be loaded correctly. However, when I click "OK" again, the schematic appears to load normally, and I can use DASYLab without issues—until I attempt to start a measurement.

As soon as I begin the measurement, DASYLab freezes and displays the error message "Invalid subsystem handle."

I am using DASYLab 2020 and controlling a shaker via a Data Translation which is a ST 401-A data acquisition device. This setup has worked previously without any issues.

Could you please assist me in resolving this issue?

Thank you in advance for your support.

[john@MCC]

It could be an issue with the hardware. You can test it using the QuickDAQ software to ensure analog inputs and outputs are working.