Hi mje_uk, there are no known crashing issues in the current version, so we’ll need more information in order to find out what’s happening.
When Song Sergeant crashes, at the bottom of the “Song Sergeant.exe has stopped working” window there should be a “View problem details” button. There will be “Exception Code” and “Exception Offset” displayed among other details.
Song Sergeant also makes a log file as it runs in which information helpful to us might be found. These log files can be found here:
Please send whatever information you can gather to email@example.com