This particular error is listed as “FPCP BRA or SET on Unordered Condition”. 

Translated, that means: the Floating Point Control Processor (FPCP) encountered a BRAnch or SET instruction but the test that said to “branch or set under the following conditions” was impossible to evaluate. This is sort of like “What do you get when you divide by zero?” or “How big is infinite?”

The error could indicate that your System file is corrupted.

What to do
If you suspect that the System file is corrupted, try re-installing it. If that fails to solve the problem, you are probably having a hardware failure. The System file can appear to be corrupted because of bad RAM or a bad disk. These possibilities can only be evaluated with certainty by an Apple Repair shop. Consider having your system examined if you don't feel capable of doing it yourself.