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>You mean that the compiler reaches a command like SET RESOURCE OFF and then deletes the file(s). Strange but very interesting ...
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I mean when running program reaches SET RESOURCE OFF not compiler.
I am sure that the line with the command was the reason.
Strange was that without changing a line of code problem dissapeared when I restored project file (pjx and pjt).
In VFP8 BETA foxuser.fpt sometimes disapears sometimes not on another unknown line - I do not have time to make investigations on this subject.
I removed any foxuser related commands and the problem still exist but its frequency decreased. Most strange for me that database product erases files with data. It seems that even in BETA it should not.