memcpy(): alignment error

Hello L4-Hackers, i get an "alignment error" when trying to memcpy(). The error occurs in a raw L4-Task (how do u "officially" name that?), no L4Linux. However, the error comes with the following line: memcpy(0x80006e80, 0x80006e84, 4); And this is the message: KERNEL0: alignment error at 80006ece (PC: 00079be8, SP: 80006b08, FSR: 410801, PSR: 60000010) No signal handler found Any idea? Thanks, again. PS: I don't know if the Fiasco Debugger would help for this problem, but i didn't have time to learn working with it, yet. Sorry for that.