an unhandled exception occurred on the dispatcher thread

 Hi,

1. What version of the program are you using?

2. Read the following articles:

• "[Knowledge Hub] Error "An unhandled exception occured in the dispatcher thread": https://www.ptc.com/en/support/article/cs323462 
• "Getting error "An unhandled exception occurred on the dispatcher thread" when trying to use Add to quick access toolbar in text formatting within Mathcad Prime 8.0": https://www.ptc.com/en/support/article/cs366338 
• "Error "An Unhandled exception occurred on the dispatcher thread. See C:\ProgramData\PTC\MathcadPrime\Logs\MathcadPrime_Exception_###.log" and Mathcad Prime fails to launch": https://www.ptc.com/en/support/article/cs34389 
• "Mathcad Prime 7.0 failed to launch with an error: "An Unhandled exception occurred on the dispatcher thread"": https://www.ptc.com/en/support/article/cs345743