Did you try to install in another machine? It can be that the downloaded is corrupted and components are missing.
I would suggest two things:
1- Delete all the files in your temporary directory. Start Windows Explorer and type the string %TEMP% into the address field. Delete all the files in this directory.
2- Download again the software. It can be that for an unknown reason your download has been corrupted.
Regards
Antonio Barroca
Autodesk Product Support
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Antonio Barroca
Product Support Specialist
Autodesk, Inc.