ST Visual Developer Crashing on Windows 7

[SKill]

I have been using ST Visual Developer version 4.3.12 for weeks. Today it started crashing when I begin a debug session. I am running Windows 7 Ultimate. There was a system update for Windows Defender completed today (Definition 1/295.207.0) as well as one on 6/4 (Definition 1/295.12.0).

I have attached my stvd_pm.log file. I shows that stvdebug.exe caused an access violation.

Any ideas?

I have tried deleting the wdb and wed files - no help. STVD still crashes after only a few session. It does not crash every time I start the debugger.