"Program Memory Area Update Failure" Error

I’m using Nero, a Sony DRU-510A, and Memorex 4x DVD-R platters that Nero InfoTool reports as supporting 4x, 2x, 1x and a manufacturing ID of “ProdiscS03”. The tool also verifies that the writer is rated 4x. When I use the DVD copy feature, recording at any speed other than 1x results in the following error when writing is attempted “Program Memory Area Update Failure (037304)”. I also get this error when using the Nero CD-DVD Speed tool. Does anyone have any idea what the problem is. I’m running XP SP2 on an homemade box (3GHz P4, 1GB RAM, twin 74GB raptors in RAID). Thanks for any help.