Trace System Megacore Function Synthesis Error

I'm trying to guess what might be wrong with your system but I'm guessing so please confirm that I've guessed right.

• Are you using SOPCB or QSYS?

• Do you have multiple QSYS hierarchies in your Quartus project (ie are you running generate multiple times)?

• How are you including the files into Quartus?

• What version of Quartus are you using?

If you're adding the files to Quartus by adding the qip file which QSYS generates then that QIP file should add each QSYS hierarchy to a different library, which means that Quartus won't complain when it sees multiple copies of the file (as they are in different libraries)

If I've guessed wrong then please provide more information and I'll try and guess more efficiently.