Solidworks Professional 2018 SP5, PDM Standard, Windows 10 computer

OK, I posted this on the Assembly Forum and no one replied. Out of the blue last Wednesday every time I went to load a large assembly Solidworks would lock up and then end. No error message, no warning. This was not isolated to just one assembly. It was several larger ones. I contacted our IT guy and he ran through the usual suspects without finding a reason why was going on. I called our VAR and was on the phone with the tech for 2 hours. He wasn't able to locate a reason this was happening either. 

Fast forward to today and I haven't heard back from the VAR. I can't just sit on my hands. I have work to do! So I backed up all my data and together with the IT guy restored my computer to factory settings. I then reloaded Solidworks and the PDM Vault.

After 4 hours of reconfiguring this time the assembly loaded perfectly!! But I noticed that all my tool box hardware was wildly oversized. I mean it was triple or quadruple it's original size. So I figured that the Toolbox folder location was not set to the shared PDM vault location. I went in and changed it (System Options-->Hole Wizard / Toolbox--> Hole Wizard and Toolbox Folder:) and the next time I went to load the assembly it crashed just as before. So I started SW again and changed the Toolbox folder location back to it's default PDM Vault toolbox location C:\SOLIDWORKS Data\.

And guess what? It loaded PERFECTLY

At least now I can work with the assembly again

But now I can't use the shared tool box with it's "approved" descriptions.

Has anyone gone through this before? I used the Toolbox with the PDM Vault at my old job and never had a problem like this! I looked online and wasn't able to find a similar occurence. But then again I probably wasn't using the correct search words. I used "Solidworks 2018 Toolbox causes assembly to crash"

Is there some kind of fix that anyone is aware of for this issue?