Hi all.
Running WUs from long queue on GTS450 under windows 7 x86, named Nathan,
i had this error for a lot of them:

<core_client_version>7.0.28</core_client_version>
<![CDATA[
<message>
Impossibile trovare il percorso specificato. (0x3) - exit code 3 (0x3)
</message>
<stderr_txt>
SWAN : FATAL : Cuda driver error 2 in file 'swanlibnv2.cpp' in line 639.
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>
]]>
On the same computer another GTS450 was running the same type of WU without any problems.
I stopped the long queue request for seven hours.
I don't modified nothing.
After this time the situation returned normal.
Did you have a solution at this problem ?
Thanks in advance for your help.
k.

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Dreams do not always come true. But not because they are too big or impossible. Why did we stop believing.
(Martin Luther King)