Apple Configurator 1.3.1 crashes. I haven't been able to prepare any IPad with the configurator.

Question

New to this process and we are setting up bays for IPads in an education environment.  I'm able to load a profile (unsupervised) onto an IPad but as soon as I choose supervise and prepare the IPad the Apple Configurator crashes with the error message below.  I'm not sure how to proceed from this - running OSX 10.7.5 and configurator 1.3.1.  The Mac book pro was bought to supervise the IPads and not used for anything else.  Have reinstalled configurator without any luck. Any help would be appreciated. 
Exception Type:  EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Application Specific Information:
274
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'ACUUnpackFirmwareOperation cannot fail the operation and without setting an error'
*** First throw call stack:
          0   CoreFoundation                      0x00007fff82091f56 __exceptionPreprocess + 198
          1   libobjc.A.dylib                     0x00007fff8e4f1d5e objc_exception_throw + 43
          2   CoreFoundation                      0x00007fff82091d8a +[NSException raise:format:arguments:] + 106
          3   Foundation                          0x00007fff8971a71f -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 169
          4   Apple Configurator                  0x0000000105795563 _mh_execute_header + 701795
          5   Apple Configurator                  0x000000010579678b _mh_execute_header + 706443
          6   Apple Configurator                  0x0000000105756707 _mh_execute_header + 444167
          7   Apple Configurator                  0x0000000105757904 _mh_execute_header + 448772
          8   Foundation                          0x00007fff896aa912 ____NSOQSchedule_block_invoke_2 + 124
          9   libdispatch.dylib                   0x00007fff8a60da82 _dispatch_call_block_and_release + 18
          10  libdispatch.dylib                   0x00007fff8a60e961 _dispatch_worker_thread2 + 255
          11  libsystem_c.dylib                   0x00007fff87bd33da _pthread_wqthread + 316
          12  libsystem_c.dylib                   0x00007fff87bd4b85 start_wqthread + 13
objc[179]: garbage collection is OFF
abort() called
terminate called throwing an exception

Answer 1

Boy, I sure hope you found a solution to this.  THe exact same thing happened top me, yesterday.  I thought it was the updates to the iTunes store and the release of iOS 7.  However, today, it is still happening.  I was partway through setting up iPads for a 1:1 initiative.  The first 11 worked fine, then the strangeness started.    Most of it seemed to relate to the iTunes store, but the worst part is exactly as you describe, and I have the same setup.   MacBook Pro specifically to manage the iPads.  Configurator crashes whenever a device is hooked up to "supervise" even if it is fresh out of the box.  The details on the crash also show the "Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'ACUUnpackFirmwareOperation cannot fail the operation and without setting an error'"
Oh, did I mention I have to have the iPads set up next week?
HELP!