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>>How can I force my project to take my changes in consideration?
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>Sometimes the Project gets confused and never views your new class code and changes, I had this problem several times and the only way I got out of it is: In the project manager simply drag the problematic class to any other class library (a copy will be made), then delete the original, now drag it back to the original VCX and delete the copied one. This seems to force the project manager to use the latest code version of the class.

Thanks, Jorge, though in this particular case it turned to be my own stupid mistake. I was sure, that I don't have sublassed method, but finally I found it in one class, so I just deleted it there, and everything started to work.