Create Prestaged Media task sequence fail - Failed to mount WIM file (0x80070002) & Failed to create media (0x80070002)

Question

Hi there
Experiencing an OSD task sequence failure.
The failure messages at the end are:
Failed to mount WIM file (0x80070002)
Failed to create media (0x80070002)
Have looked into this, however 0x80070002 appears to be a generic error code which can cover a variety of problems.
One thing I'm not sure about at all is the CreateTempDirectory process. I'm not sure about this because the Temp Directory it creates is, according to Task32, stored in a cached profile which no longer exists on the machine I'm running the SCCM console from.
Could this be a problem?
Looking at the CreateTSmedia.log via task32, these lines are viewable:
CreateTSMedia
Requested output path: C:\temp
CreateTempDirectory
Temp Directory C:\DOCUME~1\PROFILE~1\LOCALS~1\Temp\_tsmedia_1612 created
That path cannot exist because that profile is no longer present on the machine - so where exactly is the task sequence storing these temp files??
Can someone confirm if this Temp Directory path is vital to the task sequence successfully completing or not, and if it IS important how to set the Temp Directory?
Thank
John

Answer 1

Ok, can rule out the issue with Temp Directory path. 
Uninstalled SCCM admin console, defined new temp and tmp folders in env var, installed SCCM admin console, started another PreStage media job, failed again with same errors.
Failed to mount WIM file 0x80070002
Failed to create media 0x80070002
CreatTSMedia failed with error 0x80070002 details MediaGenerator 
Can't figure out what 'The system cannot find the file specified' means, the temp files are clearly being created during the media creation process and I have local administrator rights to the machine I am using.
John