@Anonymous, For starters you should provide the installation log files found in your temp directory. However, it's most likely due to the method of install you're using.
Solution:
Download the software from the Autodesk Virtual Agent
NOTE: If there are multiple parts for the download, you'll need to click each part to download them, once they are downloaded double-click Part1 (which will automatically extract the remaining parts) to begin the installation.
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