Error Stopping CPU safely, Code=127

I just started using this program to Fold again and the GPU version works perfectly on my Radeon HD 4670 but the CPU version is not working at all. When I stop the CPU I get the above error in the tracker program and would love to know what this error is and how to remedy it.

This is what is in the logfile_01 in the CPU work folder

*------------------------------*
Folding@Home Gromacs GB Core
Version 2.27 (Dec. 15, 2010)

Preparing to commence simulation
- Assembly optimizations manually forced on.
- Not checking prior termination.
- Expanded 52914 -> 197124 (decompressed 372.5 percent)
Called DecompressByteArray: compressed_data_size=52914 data_size=197124, decompressed_data_size=197124 diff=0
- Digital signature verified

Project: 10077 (Run 437, Clone 0, Gen 21)

Assembly optimizations on if available.
Entering M.D.
Mapping NT from 1 to 1
Completed 0 out of 10000000 steps (0%)
Client no longer detected. Shutting down core

Folding@home Core Shutdown: CLIENT_DIED

I should add that if I download the FAH client from stanford it works perfectly.