Error 1622 usually indicates a problem writing to the log file.

The Softimage writes the following log files to your Temporary Files folder (%TEMP%):

• %TEMP%\Autodesk_Softimage_IF.log (about 71KB)
• %TEMP%\Autodesk_Softimage_x64_Install.log (about 22MB)

To fix this problem, use the Disk Cleanup utility to clear out your %TEMP% folder.