Intermittent crashes the Vix API

We had been experiencing intermittent crashes the Vix API. We recently switched to launching vmrun.exe in a subprocess instead so the Vix API crashes would not kill our application. We have found that vmrun.exe also crashes intermittently. It displays a fatal error popup and hangs. It is very inconvenient since we are trying to control VM operations automatically and unattended. The crashes occur most often when we're reverting to snapshots or starting VMs. The crashes are more frequent when we launch multiple instances of vmrun.exe on the same computer at the same time, each to control a different VM.

The popup looks like this:

Here is the full problem signature:

Problem signature:

  Problem Event Name:                      APPCRASH

  Application Name:                             vmrun.exe

  Application Version:                          1.10.1.12915

  Application Timestamp:                   4c1310f0

  Fault Module Name:                          glib-2.0.dll

  Fault Module Version:                       2.16.4.0

  Fault Module Timestamp:                48801db1

  Exception Code:                                 c0000005

  Exception Offset:                                0005a870

  OS Version:                                         6.1.7600.2.0.0.274.10

  Locale ID:                                            1033

  Additional Information 1:                  0a9e

  Additional Information 2:                  0a9e372d3b4ad19135b953a78882e789

  Additional Information 3:                  0a9e

  Additional Information 4:                  0a9e372d3b4ad19135b953a78882e789