Brother MFC-8460D - Operand Stack Error?

[MDiddy]

I recently added a NIC to my Brother MFC-8640D and now I'm getting this error when I print longer docs or from Acrobat, the printer just spits out pages with this error message:

ERROR NAME;
  undefined
COMMAND;
  @W
OPERAND STACK;

Has anyone run across this? I've been Googling like crazy and haven't been able to find a clear explanation/solution.


Thank you!