Evidently there is a problem with the eRecovery software. I had the same problem. Spent most of the day creating a set of 10 eRecovery CDs, only to get this error on CD #10. Tried 3 other CDs, same problem. Thought maybe the drive was overheated, so I let it sit for a few hours and tried again. Same issue. The netbook and other computers recognized the media as being empty. I finally gave up and pulled a DVD+R/RW out of another machine and hooked it up and started over making DVDs this time. First one burns fine, second and last one gives the 0x203 error.
A google search turned up a patch for the Gateway version of the Acer Aspire...