The following error messages appears during a test, which contains TruClient Firefox scripts, is run in Performance Center host 11.52 patch 1.
Abnormal termination, caused by mdrv process termination."
"Error: Exception was raised when calling per-process-init function in extension two_way_comm.dll: System Exceptions: EXCEPTION_ACCESS_VIOLATION"
The problem is caused by IP spoofing and does not reproduce if IP spoofing is disabled during the test.
IP spoofing for TruClient protocols: TruClient Ajax Firefox and TruClient Ajax - Mobile is supported from LoadRunner & Performance Center 12.00 onwards.
To overcome the issue:
Disable IP spoofing during a test in which TruClient Firefox script is used or
Upgrade to ALM Performance Center 12.01 or later version.