User in Greece and user in Italy - same error, Is this a Windows7 error since the latest update or something. The installer has been in place for about 3-4 weeks and these are the first reports of this error.
I had the same issue. I thought I had set the "required execution level" (in installshield 2010 - Media->Release) to run as admin, but it was "highest available". That's probably your case too.
One crucial thing is I am calling an MSI from an installscript project. So when it was installing with a standard user, it would start the install, then immediately call the MSI and that would cause it to prompt for admin privileges. At that point, there was an installer running (the installscript one), and now it was trying to start another installer (the msi) with different privileges (because I didn't have the required exe level set to admin) so it would give the "installer running" message. BUT, if I was logged in as admin, or now that I set the required exe level to admin, the message doesn't come up and things work fine. Would you call this a bug? It's definitely a headache. Seems like the "trying to start another installer (the msi) with different privileges" is a no-no. I wonder if this is documented anywhere.
