WU failed with, Exit status 199 (0xc7) EXIT_CLIENT_EXITING

Ran on Ubuntu 14.04, 337.12 Beta drivers:

Name e28s41_e20s7f235-GIANNI_lig3-0-1-RND4843_0
Workunit 6573349
Created 27 Apr 2014 | 22:13:36 UTC
Sent 28 Apr 2014 | 2:05:26 UTC
Received 28 Apr 2014 | 9:34:16 UTC
Server state Over
Outcome Computation error
Client state Compute error
Exit status 199 (0xc7) EXIT_CLIENT_EXITING
Computer ID 173390
Report deadline 3 May 2014 | 2:05:26 UTC
Run time 9,059.74
CPU time 602.97
Validate state Invalid
Credit 0.00
Application version Long runs (8-12 hours on fastest card) v8.21 (cuda60)
Stderr output

<core_client_version>7.2.42</core_client_version>
<![CDATA[
<message>
process exited with code 199 (0xc7, -57)
</message>
<stderr_txt>
# SWAN Device 1 :
# Name : GeForce GTX 660 Ti
# ECC : Disabled
# Global mem : 2047MB
# Capability : 3.0
# PCI ID : 0000:02:00.0
# Device clock : 1110MHz
# Memory clock : 3004MHz
# Memory width : 192bit
SWAN : FATAL : Cuda driver error 700 in file 'swanlibnv2.cpp' in line 1963.
# SWAN swan_assert -57

</stderr_txt>
]]>

The Boinc FAQ service suggests that,
"The task was ended when the client was exited".
I might have removed the Video cable around that time but Boinc is still running.
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