>I have added some classes to the "wizstyle.vcx" in 3.0b, >and when I try to open those clases in 5.0 I receive the >message "wizstyle.vcx" is not an object file. Any ideas in >what could it be ? >=THIS.thanks("in advance") It contains 3.0 object code, and Fox has changed the format of this between any two versions. Just a simple Compile form wizstyle.vcx will do the trick. VCXes have exactly the same structure as SCXes, so it will work; I've tried it, so it already works :)