These (unstable and withdrawn) version are silently causing WU corruption on upload and make other WUs fail.

We encourage you to use the stable versions of BOINC clients.

Thanks

"Upload certificates" are a mechanism that keeps bad guys
from DoS'ing your upload servers
(note: such an attack has never happened, as far as I know).

We're changing the format of upload certificates,
and we're starting to test a version of the client
for which old-format certificates won't work.
Volunteers testers won't be able to upload completed jobs,
and they may complain to you.

I suggest that all projects disable upload certificates.
To do so, add the following to your config.xml file:

<dont_generate_upload_certificates/>
<ignore_upload_certificates/>

To resume using upload certificates, if you wish:

1) upgrade to the current server source code (from trunk)
2) wait for all jobs with old-format certificates to be dispatched
3) re-enable certificates by removing the above lines.

Let me know if any questions.

-- David

I was also fighting GPUGrid workunit errors - especially for Linux based host 107285. A lot of errors was caused when running Boinc 6.12.34 - and only GPUGrid workunits errored and usually somewhere at the end of coputing task (may be it was errored when sending results - but I'm not shure about this). Other projects was running good on thist host.
In GPUGrid stderr out log i had 'process got signal 11' - whih was the only visible clue - and it was too little for me to define the source of a problem. But this thread gave me an idea to try to downgrade Boinc and see what will happen. And I did it 3 days ago. Now this host is running Boinc 6.10.58 - without any errors for all 3 days (it's 5 GPUGrid workunits - including 2 longruns).
It may be a coincidence that it's all working good for me now - but also may include some tips for people trying to fight this annoying errors ...
And collecting information I learned from this thread IMHO it looks like GPUGrid servers may need some attention ...

Just a reminder to anyone still using Boinc versions 6.13.3 through to 6.13.6 - please move to a different client version.

There's a <min_core_client_version>, but no specific banning tool that I'm aware of.

They're talking of migrating the v6.13.xx alpha version into a beta v7.xx.yy for wider testing fairly soon, perhaps in around a month. From there - probably a long way from there - it'll become an official release. At some point, it would be good to work out exactly what the problem is, and fixing anything that remains, before unwanted clients start sprouting and joining the project without reading this thread.

does this include the 7.x versions as well? I recently rejoined this project hand have yet to get one WU to not error out. I am running on windows XP with the latest (as of yesterday) stable drivers for nvidia. (my card is a GeForce 295)