I just installed a 9800 GTX+ into a secondary rig of mine and want to run the GPU2 client on it. I've tried the stock GPU2 client and also the FAH GPU Tracker V2 client and I end up getting the same error using both.
This system with the 9800 GTX+ does have an onboard Radeon Xpress 200 VGA adapter. I had to go into the BIOS on this board and set the PCI-E as the primary display adapter. I removed the ATI catalyst software and removed all related ATI software. I even ran Driver Sweeper afterwards. I'm using the 260.99 Nvidia driver on Windows Server 2008 32 bit. The 9800 GTX+ can withstand 10 minutes of Kombuster and temps don't get out of hand so I'm pretty certain the card is fine (I do have an aggressive fan profile set on the card via Afterburner).
Here is what I get in the log from both the clients when trying to run them. (This one below is from the WU Failures directory on the GPU Tracker client)
--- Opening Log file [January 1 07:36:23 UTC]
# Windows GPU Console Edition #################################################
###############################################################################
Folding@Home Client Version 6.23
http://folding.stanford.edu
###############################################################################
###############################################################################
Launch directory: C:\Users\Ross\Documents\FAH GPU Tracker V2\GPU0
Executable: C:\Users\Ross\Documents\FAH GPU Tracker V2\FAH_GPU2.exe
Arguments: -oneunit -gpu 0
[07:36:23] - Ask before connecting: No
[07:36:23] - User name: Ross211 (Team 50711)
[07:36:23] - User ID: 72663AEC695CEB6A
[07:36:23] - Machine ID: 3
[07:36:23]
[07:36:23] Work directory not found. Creating...
[07:36:23] Could not open work queue, generating new queue...
[07:36:23] - Preparing to get new work unit...
[07:36:23] + Attempting to get work packet
[07:36:23] - Connecting to assignment server
[07:36:24] - Successful: assigned to (171.67.108.11).
[07:36:24] + News From Folding@Home: Welcome to Folding@Home
[07:36:24] Loaded queue successfully.
[07:36:25] + Closed connections
[07:36:25]
[07:36:25] + Processing work unit
[07:36:25] Core required: FahCore_11.exe
[07:36:25] Core found.
[07:36:25] Working on queue slot 01 [January 1 07:36:25 UTC]
[07:36:25] + Working ...
[07:36:25]
[07:36:25] *------------------------------*
[07:36:25] Folding@Home GPU Core
[07:36:25] Version 1.31 (Tue Sep 15 10:57:42 PDT 2009)
[07:36:25]
[07:36:25] Compiler : Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.50727.762 for 80x86
[07:36:25] Build host: amoeba
[07:36:25] Board Type: Nvidia
[07:36:25] Core :
[07:36:25] Preparing to commence simulation
[07:36:25] - Looking at optimizations...
[07:36:25] DeleteFrameFiles: successfully deleted file=work/wudata_01.ckp
[07:36:25] - Created dyn
[07:36:25] - Files status OK
[07:36:25] - Expanded 45411 -> 251112 (decompressed 552.9 percent)
[07:36:25] Called DecompressByteArray: compressed_data_size=45411 data_size=251112, decompressed_data_size=251112 diff=0
[07:36:25] - Digital signature verified
[07:36:25]
[07:36:25] Project: 5769 (Run 0, Clone 219, Gen 121)
[07:36:25]
[07:36:25] Assembly optimizations on if available.
[07:36:25] Entering M.D.
[07:36:31] Tpr hash work/wudata_01.tpr: 3281136117 2544728572 4217056393 3144557638 4075114056
[07:36:31]
[07:36:31] Calling fah_main args: 14 usage=100
[07:36:31]
[07:36:32] Working on Protein
[07:36:32] mdrun_gpu returned
[07:36:32] Self-test failure
[07:36:32]
[07:36:32] Folding@home Core Shutdown: UNSTABLE_MACHINE
[07:36:35] CoreStatus = 7A (122)
[07:36:35] Sending work to server
[07:36:35] Project: 5769 (Run 0, Clone 219, Gen 121)
[07:36:35] - Read packet limit of 540015616... Set to 524286976.
[07:36:35] - Error: Could not get length of results file work/wuresults_01.dat
[07:36:35] - Error: Could not read unit 01 file. Removing from queue.
[07:36:35] + -oneunit flag given and have now finished a unit. Exiting.
Folding@Home Client Shutdown.