I've been running this host for a long time, but as of a few hours ago it began encountering error after error. Given these are all Nathan tasks I've never had issues with, I imagine something went wrong on my system.

After a reboot, I still get the same error:

<core_client_version>7.0.28</core_client_version>
<![CDATA[
<message>
The system cannot find the path specified. (0x3) - exit code 3 (0x3)
</message>
<stderr_txt>
MDIO: cannot open file "restart.coor"
SWAN : FATAL : Cuda driver error 999 in file 'swanlibnv2.cpp' in line 1574.
Assertion failed: a, file swanlibnv2.cpp, line 59

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

</stderr_txt>
]]>

Any ideas of what I should try? I switched this over to some other projects and have completed WU's successfully, running with the same settings that have worked since I got the card. I would have expected some weird error to be fixed by the restart, so now I'm not sure. Nothing changed on my system, as it completed numerous WU's successfully since the last reboot until this point when everything hit the fan.