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After an in place upgrade from AX2012R2 to AX2012R3, I was receiving lots of error messages when CIL compiling or dealing with the AIF.
Cannot create temporrary file c:\program files (x86)\Microsoft Dynamics AX\60\Client\app\standard\temp\$tmp0003ffff.$$$. The disk may be full
Found the answer to resolve this issue by editing the registry:
Set “PerSessionTempDir” to equal dword:00000000
Thanks for the information from Ajay Odedra: Link (Link references AX2009 but still seems to be a problem in AX2012 and works fine)