crashes when starting linuxcnc, but not always

Hi all,
I was running the buster iso and Lcnc 2.8.2 as downloaded from the main linuxcnc site, this ran perfectly and was very stable. however in getting my tool changer to intergrate to linuxcnc I needed to run halcompile. I cannot for the life of me get this to run on the above.

I then installed Mint and linuxcnc in it with the RT kernal, then allowed the halcompile and the toolchanger is now all operational
however I have a problem in that 9 times out of 10 when I start up the PC and try to open linuxcnc it will crash. sometimes if you re try linuxcnc several times it will open gmoccapy and all then works perfectly until you exit linuxcnc and try to start it again, at which point it will almost certain crash on every attemp.
The only cure is then to shut down, restart in the none RT kernal, shut down again and restart in the RT kernal, then it may open gmocappy or it may crash - all a bit random
I've tried 2.82 and the 2.9xxxx - both do exactly the same thing

I've attched the crash report and the hal and ini files

if someone can explain in simple steps how to get halcompile to run in Buster I will more than happily dump mint and revert to debian buster and 2.8.2

many thanks
Paul 

No. See attached image