1

Hi, i have many students using kinovea through a remote desktop and they are getting the following message preventing from saving any work.

Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you Quit the application will close immediately.
Collection was modified; enumeration operation may not execute.

2

Hi, that definitely sounds like a bug.
Could you connect to one of the machine and go to the log folder (via help menu) and then collect the files whose name start with "Unhandled exception"? These contain the last things the program was doing before the issue and will help me identify exactly where the problem is. Send them to joan at kinovea dot org or create an issue on github and attach them there.
If possible also collect the log.txt and log.txt.1 files, send these ones via mail only as they can sometimes contain personal data like file paths.
Thank you.