I purchased MicroStudio on 6/8.
Received install instructions via email.
Downloaded mstudio2604setup.exe.
Killed all apps except Windows Explorer.
Double-clicked mstudio2604setup.exe.
Received the InstallShield error message shown in the attached file.
Please advise.
[Well, I guess your forum doesn't accept *.rtf files. On to email...]
ADMIN NOTE: No, in today's virus infected world, we only allow those file formats that can't have embedded viruses. 
You should post the text error message here so others can help you, not just MTUSUPPORT. Also, then your question and answers to it can be seen by others to help them 24/7/365. 
Jon, I think he meant all other running programs were shut down.