Out of the blue, my new installation of SW2015 stopped functioning.

It would launch, but any attempt to load a model or assembly, or to create a new file, would cause SW to crash, and give a "SolidWorks has encountered an error" msgbox (NOT a standard windows msgbox, but a SW box.)

Our VAR spent 90 minutes doing a remote login to attempt to fix it.  After failing to resolve it, he informed me that it is a known issue that is caused by a "Corrupt Windows User Profile."

His solution was to tell me to have a new user account put on the machine, and told me that would resolve the issue.

This machine is less than 2 months old, and a quick scan with ccleaner and System File Checker revealed no issues with the registry.

I had our IT department set up a new user account, and now SW appears to work fine again.

Prior to this, there was no issue with the machine or any other piece of software on it - a quick look through the registry for my user account showed no issues or garbage entries.

I am spending the day setting up my email, network shortcuts, templates, preferences, etc.

I am just wondering if anyone else has experienced Windows suddenly having a corrupt user profile with no other apparent symptoms other than SW suddenly becoming broken?  Since XP I believe Windows checks for registry errors at startup, and automatically restores a backup from the previous boot if errors are found.  What key could become corrupted and cause only SW to become broken?