I am successfully running GPUGRID on my first PC that has 4x GF110 nVidia GPUs. When I try to add projects to two other machines (each having 2x GF110 nVidia GPUs), I get the following message after project initialization "[error] No start tag in scheduler reply". Resetting and detatching/reattatching the project does not fix it...

I am running BOINC 6.12.33 (x64).

It might be a firewall/AV problem, so check that first.
You could try an earlier Boinc version or even try forcing Boinc to use HTTP 1.0:

Edit your cc_config.xml file and add the <http_1_0>1</http_1_0> option:

<cc_config>
<options>
<http_1_0>1</http_1_0>
</options>
</cc_config>

Where is that file located?

Where is that file located?

It isn't 'located' - it's something you can create for yourself if you need it.

Make sure it's a plain-text file, although with the ".xml" extension: it belongs in the BOINC data directory - that location is given in the first few lines of the event/message log, each time BOINC starts up.

For details, refer to client configuration.

Tried running GPUGRID-suggested version (6.10.36) and editing the cc_config.xml accordingly. It does not fix it. I am running 5 other projects on these PCs with no problems...

Did you close and open Boinc after editing/creating the cc_config.xml file?
This is required.

Yes, I did...

I guess I'll just dedicate all GPU time to GPUGRID on the machine at home. Even though the problem can be the firewall at work, it is strange that I can get tasks for all other projects except GPUGRID on my work machines...

Some good news for my work PCs...

Found out that our DMZ will allow GPUGRID to get updates! I have now added 4 more 24/7 GPUs to the cause with maybe 2 or 4 more to add soon!

Oh, happy days! ;o)

Some good news for my work PCs...

Found out that our DMZ will allow GPUGRID to get updates! I have now added 4 more 24/7 GPUs to the cause with maybe 2 or 4 more to add soon!

Oh, happy days! ;o)

Thanks.

gdf