Did not see a topic amongst the 50 now in this forum on a fail we've seen a few on during beta https://secure.worldcommunitygrid.org/forums/wcg/viewthread_thread,39109 and one case in the Android forum, a OET1 at the time... not an exclusive, but still.

Result Name: HST1_ 002912_ 000042_ AC0003_ T300_ F00042_ S00005_ 1--
<core_client_version>7.6.2</core_client_version>
<![CDATA[
<message>
(unknown error) - exit code -1073740940 (0xc0000374)
</message>
<stderr_txt>
INFO: No state to restore. Start from the beginning.
[08:09:09] INFO: Running initial simulation
Writing checkpoint at step 850.
[10:42:15] INFO: Running initial simulation

</stderr_txt>
]]>

To only piece in the event log that tells of the fail is 10 seconds later

31-May-2016 10:42:25 [World Community Grid] [sched_op] Reason: Unrecoverable error for task HST1_002912_000042_AC0003_T300_F00042_S00005_1
31-May-2016 10:42:25 [World Community Grid] Computation for task HST1_002912_000042_AC0003_T300_F00042_S00005_1 finished
31-May-2016 10:42:25 [World Community Grid] Output file HST1_002912_000042_AC0003_T300_F00042_S00005_1_r1010594328_0 for task HST1_002912_000042_AC0003_T300_F00042_S00005_1 absent
31-May-2016 10:42:25 [World Community Grid] Output file HST1_002912_000042_AC0003_T300_F00042_S00005_1_r1010594328_4 for task HST1_002912_000042_AC0003_T300_F00042_S00005_1 absent
31-May-2016 10:42:25 [World Community Grid] Output file HST1_002912_000042_AC0003_T300_F00042_S00005_1_r1010594328_5 for task HST1_002912_000042_AC0003_T300_F00042_S00005_1 absent
31-May-2016 10:42:25 [World Community Grid] Output file HST1_002912_000042_AC0003_T300_F00042_S00005_1_r1010594328_6 for task HST1_002912_000042_AC0003_T300_F00042_S00005_1 absent

Truth be told, there was a power fail and this occurred shortly after power up and client start to run [8 HST concurrent], this one the only going heavy. Still not found on Google, but one comment here was a memory access violation, though the serial input file absent suggest something more going on.