I just experienced another crash on startup using a self compiled version of the pvr-mythtv addon. I have since uninstalled my compiled version and installed the ppa version to rule out compile issues. Thread 1 of the stack trace is different to the others I have posted, but it mentions mythtv. I want to report this to the correct people but I dont really understand the stack trace.
https://paste.ubuntu.com/p/PBGPFjjsDt/
On a side note, is there a primer anywhere for reading crash logs? Is thread 1 the 'ground zero' of the crash?