FileMaker scripts won't run...

I have been working some some scripts and testing them on both 9.2 and 10.2. Suddenly, any command I send to FileMaker produces the error “Application does not run in this environment.” I am booted in 9.2 (not classic) and the application is running in this environment. The scripts compile without problem. Any ideas? I’ve rebuilt the desktop and run Norton.) Thanks in advance for your help.

Well, the problem has disappear as suddenly as it appeared. Very strange.