Mechanica won't start from within WF4

[nlinesk8s]

I normally start Mechanica by going to Applications/Mechanica from within ProE (WF4). I recently changed to the latest version of Internet Explorer (I was on 8). Anyways, now when I go to Mechanica, the part regenerates and nothing else happens.

I am able to bring up Mechanica independently.

I know someone who works with Creo who had several days of not being able to get a license, and it turned out to be related to Explorer.

Anyone know how to fix this?