I have seen so many people complaining on the same error..and some some seem to have fixed it. However I cannot a clear and consise answer on how to sort the problem out. i.e I cannot run parallel at all as it keep saying that the :windows XP(MAC) winxp.hdd is not a regular file.....Apart from panicking that I can't use windows program at all..what should i do??? Thanks in advance for any help!