2021.2 CAD++ constantly crashing

I'm running 2021.2 sp 4 CAD++ and have no such issue on three machines, one of them offline so lots of editting.

Different service pack, but new-ish version. Lots of GD&T in the new engine, as well as legacy. 2-3 different programs per day, start Monday, shut down Saturday, no crash in between.

Few crashes while programming offline, with lots of copy/paste/delete and variables. I don't really script, so nothing there.

For the guy that can't open a program and then magically can, I'd bet it is a Windows subsystem thing, some process running while you start PcDmis (or not running) causes a crash and then the opposite is happening and you can start. Maybe a windows update is pushed silently to start and end that cycle.
Currently I have 5 apps open and 142 background processes in Windows. This is where I program offline and is my computer for everything.
This makes it hard to trace down crashes, as one application crashing doesn't necessarily mean it is something IN that applications code that is killing it.
Add all the hardware mods from one PC to another and it gets really difficult, much of it out of Hexagon's control (at least for off-line stations).

Could be a windows thing here as well.

Stack problem with the RAM, if PcDmis isn't good at clean-up when you open and close cmm programs, you could hit a problem area in a stick of RAM.
Hard drive, also same as above if you are on pagefile at the time it dies.
Pagefile outright if something is wrong there and it is trying to HD read/write for PcDmis AND the pagefile simulatneously.

PcDmis is known to be the least stable option, so could easily be something in SP6.

Maybe something in SP6 with a dll that you don't have updated, or you do have updated beyond where they tested and the rest of us use.

Lots of possibilities.

I'd have my IT start running through windows and pcdmis logs of crashes looking for a common thread to attack. I can't have it crash that often, I'd go crazier than I am.

Switch version/SP and see if that still happens.

Don't know if you can go up, but you can go down to 2021.1.
You lose some functionality, but if 2021.1 release, SP3 and SP6 are all stable, you know it is something with 2021.2.
Wipe it and re-install .2 release. If that is stable, start putting in service packs.
If you get to 6 and it starts dying again, open a ticket with hexagon sending them the crash reports and reinstall to 2021.2 sp5.

A lot of effort on your part, but over time it will be less, eventually.

Good luck.

I'm running 2021.2 sp 4 CAD++ and have no such issue on three machines, one of them offline so lots of editting.

Different service pack, but new-ish version. Lots of GD&T in the new engine, as well as legacy. 2-3 different programs per day, start Monday, shut down Saturday, no crash in between.

Few crashes while programming offline, with lots of copy/paste/delete and variables. I don't really script, so nothing there.

For the guy that can't open a program and then magically can, I'd bet it is a Windows subsystem thing, some process running while you start PcDmis (or not running) causes a crash and then the opposite is happening and you can start. Maybe a windows update is pushed silently to start and end that cycle.
Currently I have 5 apps open and 142 background processes in Windows. This is where I program offline and is my computer for everything.
This makes it hard to trace down crashes, as one application crashing doesn't necessarily mean it is something IN that applications code that is killing it.
Add all the hardware mods from one PC to another and it gets really difficult, much of it out of Hexagon's control (at least for off-line stations).

Could be a windows thing here as well.

Stack problem with the RAM, if PcDmis isn't good at clean-up when you open and close cmm programs, you could hit a problem area in a stick of RAM.
Hard drive, also same as above if you are on pagefile at the time it dies.
Pagefile outright if something is wrong there and it is trying to HD read/write for PcDmis AND the pagefile simulatneously.

PcDmis is known to be the least stable option, so could easily be something in SP6.

Maybe something in SP6 with a dll that you don't have updated, or you do have updated beyond where they tested and the rest of us use.

Lots of possibilities.

I'd have my IT start running through windows and pcdmis logs of crashes looking for a common thread to attack. I can't have it crash that often, I'd go crazier than I am.

Switch version/SP and see if that still happens.

Don't know if you can go up, but you can go down to 2021.1.
You lose some functionality, but if 2021.1 release, SP3 and SP6 are all stable, you know it is something with 2021.2.
Wipe it and re-install .2 release. If that is stable, start putting in service packs.
If you get to 6 and it starts dying again, open a ticket with hexagon sending them the crash reports and reinstall to 2021.2 sp5.

A lot of effort on your part, but over time it will be less, eventually.

Good luck.