Writing program in VFP 9. Works fine in ide, but when I build an
executable file and run it outside of the ide I get class name is
invalid. One is named vfpclasses and the other wmp. How do I know
which one is the culprit so that I can program it better the next time.
Vfpclasses are the subclassed vfp class components and wmp is
WMPlayer. Thanks for any help.

may be you can write a WAIT WINDOWS "Next is WMP class" NOWAIT before
instanciating the wmp class et another wait for the other class. When the
error occurs you will have the name of the class ... if you do not move the
mouse (you can also use WAIT WINDOW NOWAIT NOCLEAR)

--
Jean à Grenoble
http://www.atoutfox.org