Every time I try to create a new part in SW 2019 SP0 or 2018 SP5, I always encounter an issue and SW crashes 100% of the time.
When I edit or modify or even save an existing part/assembly I have no issues. It's only when creating a new file.
I suggest running Solidworks RX and packaging the files to sent to you VAR. There could be any number of things that could cause a consistent crash. A repeatable crash like this should be a no-brainer for your VAR to figure out.
Your Part template may be corrupt. Try starting a new Part with my template (enclosed) and see if you get the same result.
As I'm typing it occurs to me that I assume you're using a custom template which you're choosing from the Advanced new document dialog box. If that's correct, you might try clicking on the Novice button and seeing if the default template there will work.
Retrieving data ...