Siril 1.40 crashes / just hangs when I open it

I’ve tried several times to get 1.4 to work; including the current version released 5th Dec but also several of the prior versions.

It worked fine with the first Beta, but now no matter what version I install, Siril just hangs when I open it. Sometimes Windows will come up to tell me the software is not responding, other times I have to use Task Manager.

This is the output log, but I also get a message “Entering wrapping_idle for function 00007ff6594a8070”.

Any ideas what might be causing this?