Michel,

you might have mentioned that you are using the exe's in a COM environment <g>.

Since they are in different processes, I'ld expect the behaviour you describe, since they don't share a common adress space, but I haven't really researched it. You might try a slightly different architectural approach: create the object in the main exe. If you need specific functionality only in the sub.exe, don't implement as a subclass of the main, but either create small worker objects in the sub.exe or try COM event binding. Since you'll have a marshalled COM object, if you have many calls to this object, the performance will suffer - take a look at your code seen from that perspective before trying <g>. The only other way not to suffer from redundancy is to put the common inheritance into separate prg's or vcx "left" on the disk to be called directly - but the memory will probably used in the main and sub exe, even if the code is only not redundant.

HTH

thomas