Alession,

>I noticed that an application which run perfectly (almost perfectly) on Me gives me Fatal error on XP environment. I also have problems running the application in VFP environment, not launching the exe file i mean, while it doesn't happen in ME environment. Any Suggestions ?

Do you have SP1 installed? When does the exe crash?

>PS runningthe exe application in the XP I also get a message "Feature not available" i cannot explai, that

This error means that you are trying to execute a line of code that only works in the dev environment like SET STEP ON.