Based on the address of the error being 00101250 I don't think it is a bad trace. A bad trace would cause an error at a "threshold" address like 00101000 for example. This is almost certainly a bad RAM chip. It is one of the surface mount RAM chips and it will need to be replaced. If it is an MV-4 board then I can send you a picture showing which RAM chip is causing the error. If it is a MV-4F then I might be able to show you. I can sell you RAM chips just like the originals for $5 each or you can get generic ones elsewhere.