Microstudio 4.006 problem: inaccessible

[EclecticProf]

Microstudio 4.006 is not working AGAIN. I thought my Microstudio problem was solved (see October 26th thread with same name) and left for a trip. When I got back, I tried to open Microstudio and got the same non-response: hour-glass opens for 5-10 seconds, then nothing. Taskmanager shows Microstudio.exe as a task with 0 CPU, but does not show Microstudio as an application. Other programs (e.g., Windows Explorer) don't work properly until I go in to task manager and delete Microstudio.exe. I haven't installed any new software since it worked last.

I removed Microstudio (which deletes all the MTU folders in the C:\\Programs directory. I used REGEDIT to find and delete the MUT key.
I rebooted, reinstalled the Micro-studio softare, rebooted and got the same non-result.

Would 4.1 help? Any other suggestions?