NVidea GPU doesn't support openCL message; missing GPU

In a recently built system running Win 7 Ultimate, 64-bit. I decided to rebuild the system on Windows 8. It was horrible, so I reinstalled Win 7.
Since then it has not been downloading GPU work, or if it has,
it has been mostly non-existent. This hardware worked beautifully with the GPUs previously. It says non-existent GPU. What have I missed?
BOINC 7.0.28 is what the web installer recommends for this OS. The hardware detected appears correct.
I have also set the CUDA_GRID_SIZE_COMPAT environment variable to 1.


Here is the log file after repairing BOINC and restarting the machine.


2/19/2013 5:25:00 PM | | Starting BOINC client version 7.0.28 for windows_x86_64
2/19/2013 5:25:00 PM | | log flags: file_xfer, sched_ops, task
2/19/2013 5:25:00 PM | | Libraries: libcurl/7.25.0 OpenSSL/1.0.1 zlib/1.2.6
2/19/2013 5:25:00 PM | | Data directory: C:\ProgramData\BOINC
2/19/2013 5:25:00 PM | | Running under account snicol
2/19/2013 5:25:00 PM | | Processor: 8 GenuineIntel Intel(R) Core(TM) i7-3770K CPU @ 3.50GHz [Family 6 Model 58 Stepping 9]
2/19/2013 5:25:00 PM | | Processor: 256.00 KB cache
2/19/2013 5:25:00 PM | | Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss htt tm pni ssse3 cx16 sse4_1 sse4_2 syscall nx lm vmx tm2 popcnt aes pbe
2/19/2013 5:25:00 PM | | OS: Microsoft Windows 7: Ultimate x64 Edition, Service Pack 1, (06.01.7601.00)
2/19/2013 5:25:00 PM | | Memory: 15.89 GB physical, 31.77 GB virtual
2/19/2013 5:25:00 PM | | Disk: 223.47 GB total, 161.61 GB free
2/19/2013 5:25:00 PM | | Local time is UTC -5 hours
2/19/2013 5:25:00 PM | | NVIDIA GPU 0: GeForce GTX 680 (driver version 310.90, CUDA version 5.0, compute capability 3.0, 2048MB, 8382294MB available, 3453 GFLOPS peak)
2/19/2013 5:25:00 PM | | NVIDIA GPU 1: GeForce GTX 680 (driver version 310.90, CUDA version 5.0, compute capability 3.0, 2048MB, 1887MB available, 3453 GFLOPS peak)
2/19/2013 5:25:00 PM | | OpenCL: NVIDIA GPU 0 (not used): GeForce GTX 680 (driver version 310.90, device version OpenCL 1.1 CUDA, 2048MB, 8382294MB available)
2/19/2013 5:25:00 PM | | OpenCL: NVIDIA GPU 1 (not used): GeForce GTX 680 (driver version 310.90, device version OpenCL 1.1 CUDA, 2048MB, 1887MB available)
2/19/2013 5:25:00 PM | | App version needs OpenCL but GPU doesn't support it
2/19/2013 5:25:00 PM | SETI@home | Application uses missing NVIDIA GPU
2/19/2013 5:25:00 PM | | Config: use all coprocessors
2/19/2013 5:25:00 PM | SETI@home | URL http://setiathome.berkeley.edu/; Computer ID 6893033; resource share 100
2/19/2013 5:25:00 PM | SETI@home | General prefs: from SETI@home (last modified 21-Oct-2012 22:20:55)
2/19/2013 5:25:00 PM | SETI@home | Computer location: home
2/19/2013 5:25:00 PM | | General prefs: using separate prefs for home
2/19/2013 5:25:00 PM | | Reading preferences override file
2/19/2013 5:25:00 PM | | Preferences:
2/19/2013 5:25:00 PM | | max memory usage when active: 8133.18MB
2/19/2013 5:25:00 PM | | max memory usage when idle: 14639.72MB
2/19/2013 5:25:00 PM | | max disk usage: 10.00GB
2/19/2013 5:25:00 PM | | don't compute while active
2/19/2013 5:25:00 PM | | don't use GPU while active
2/19/2013 5:25:00 PM | | (to change preferences, visit the web site of an attached project, or select Preferences in the Manager)
2/19/2013 5:25:00 PM | | Not using a proxy
2/19/2013 5:25:01 PM | | Suspending computation - computer is in use


Here is the content of cc_config.xml found in C:/ProgramData/BOINC/

<cc_config>
<options>
<use_all_gpus>1</use_all_gpus>
</options>
</cc_config>

Thanks for any advice. I did not recognize this issue being explained for Nvidea GPUs in the first few pages of threads.

Steve
____________

BOINC is using both GPUs ("Config: use all coprocessors" is shown), but only the CUDA part. Don't ask me why it's ignoring the OpenCL parts. ;-)

Gruß,
Gundolf