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Also while you are generating the qsys project. Just have a look in to the files in the pop up where the message appears as generated successfully. Is there nay error or warning as FWD_pointer or something. OR you can go to nios command shell in qsys<tools. Just have a look if this message popups or not.
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There is no indication that I'm doing anything wrong before the end. And then the error can be anything. Such a debug environment is not good where the error can be anything and waits until the end to generate error msg.