change in VB EXE file.

[ivanov]

right..right, I will try.

[Michel]

I force the JNE jumps to PUSH 0000CC81 ("Professional Version" for About dialogbox). But, if the previous TEST EAX, EAX is Zero, next JMP to PUSH 0000CC82 ("Trial Version").

Are you sure the real test is not before this "test eax", and that the "jne" is not only the way to show the right message in the about-box ? If this is the case, another part of the prog may perform the test too and produce some incompatibility.
So, the first thing would be to be sure you have found the very ROOT of the Prof-Trial test, and patch that, not the message.
Other thing : you may try to leave the JNE and exchange the two PUCHs : no more crc-check problem, and see what happen...
Good luck.

Or perhaps you are fixing the check in the startup routine, but there is another/different check in the form initialization/startup/show code

Hi.. i suggest u to use SmartCheck as it's very good when u need to analize VB6 code (also in P-code) and it's quite simple to use.

RF

[ivanov]

SmartCheck crashes when loading this VB prog.

humm. what msvb60.dll version are u using? I suffered crashes once too, changed it and got it to work.

RF

[ivanov]

i see, i will try to find the new one.
btw, what version on yours? i cannot check it now since i am on the way.

WKTVBDebugger: hxxp://vbdebug.cjb.n*t/ very nice