Cannot create standalone USB media

When trying to make standalone USB media we get errors we can't get past.

Here is the errors from the log file with some lines before and after the actual error:

Staging OS Image Package BMC000EECreateTsMedia4/11/2014 11:58:07 AM9064 (0x2368)
Before executing state - fsVolumeSpaceRemaining= 23066 MbCreateTsMedia4/11/2014 11:58:07 AM9064 (0x2368)
Win7_4-10-14001.swm size is 822 MbCreateTsMedia4/11/2014 11:58:07 AM9064 (0x2368)
After executing state - fsVolumeSpaceRemaining= 22244 MbCreateTsMedia4/11/2014 11:58:07 AM9064 (0x2368)
------------------------------------------- CreateTsMedia4/11/2014 11:58:07 AM9064 (0x2368)
Could not find extension in input path "J:\"CreateTsMedia4/11/2014 11:58:07 AM9064 (0x2368)
Failed to create media (0x80070057)CreateTsMedia4/11/2014 11:58:07 AM9064 (0x2368)
CreateTsMedia failed with error 0x80070057, details=""CreateTsMedia4/11/2014 11:58:07 AM9064 (0x2368)
MediaGenerator::~MediaGenerator()CreateTsMedia4/11/2014 11:58:07 AM9064 (0x2368)
~Machine()CreateTsMedia4/11/2014 11:58:07 AM9064 (0x2368)
State::~State()CreateTsMedia4/11/2014 11:58:07 AM9064 (0x2368)
State::~State()CreateTsMedia4/11/2014 11:58:07 AM9064 (0x2368)

This happens on 3 different computers one of which is fresh out of the box.  I have read through all the threads that talk about network shares and the hidden windows 7 drive but none of these solution resolve the issue.

2 of the computers are windows 7 ENT and 1 is windows 8 ENT.  This is a large image an we are using a 32GB Transcend USB 3 flash drive.  Any help would be appreciated.