PSIsafe Upgrade Troubleshooting: Issue 01.05: Error logging in with "Void Method"

Problem: 

Error logging in after update for end users. The error has in its wording “Void Method…”

Solution:

The Update did not succeed. Possible reasons:
1. Terminal Service environment, where the same SAFE client executable is used by multiple users and a few users are still logged in.
a. Read Update Instructions for Terminal Services
2. A CABINET Module is currently running and cannot be automatically shut down.
a. Start Task Manager, End the Process and restart SAFE to update.