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From looking at some of them other people are also getting errors, and some are working.

You'd probably need to get the 6.12 app somehow instead of using the 6.13 app. That will be a bit hard seeing as the earliest drivers for the GTX460 also support cuda 3.1 which is how GPUgrid decides which app to send.
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BOINC blog

hedeon, you have a good system with enough RAM. I expect docking does not use a massive amount of RAM, but I have not checked. Your GPUGrid tasks are failing mid-run, (Incorrect function. (0x1) - exit code 1 (0x1)), but some complete. This is sometimes a result of displaying graphics (using the screen saver), so if that is on turn it off.
You should set Boinc Manager to only use 99% of the CPU, to free up one CPU core and use swan_sync=0 (if you have not already done so). As well as improving speed, swan_sync combined with freeing up a CPU thread should improve reliability (prevent time-outs). If you closed Windows without closing Boinc first, this can also cause an error like this.

There are two other obvious things to check.
It is possible that your system is overheating. So use the software that came with the motherboard to check the CPU temperature and use GPUZ to check the temperatures of the GPU. You can use EVGA Precision to increase GPU fan speed, and also measure the temps.
Another possibility is that the tasks error out when you are using the computer (perhaps watching online video or playing a game), or running scans.
Do you know what you or the system was doing when the tasks failed? You could look at the Boinc messages (or the online returns) and your log files for error messages. You can use the Snooze GPU function or set paramiters to not use the GPU if you are using the system or playing games. You will have to stick to the 6.13app, due to the driver/cuda/app relationship, but 6.13 tends to do well for Fermi's (for thos with a pre-Fermi card the 6.12app runs better).

I edited my post, so you might want to read it again.
http://www.gpugrid.net/forum_thread.php?id=2380&nowrap=true#19862

One other thing,
If your system has been on continuously, I would suggest a reboot; sometimes another non crunching operation can interfeer with Boinc or the tasks (often memory related) and cause regular failures, though usually they fail immediately.

You will have to stick to the 6.13app; I don't think that the 197.45 driver supports the GTX460, and that is the most recent (full) driver that could allow somone to run the 6.12app.

Where you using a screen saver, or restarting the system without first closing Boinc?

It was the video that did the dastardly deed; looks like the online video forced itself into used video memory. Unnecessary junk videos and advertising spam is the scourge of the Internet, but when their aggressive advertising messes up research on your computer, they stoop too low. You can disable media in browsers, but who wants to reconfigure their browser every time they visit a certain site?