I found a fix for this today, if you look into the directory in which SRAnipal is being installed, usually Programfiles/Vive, then go into the SRAnipal directory and copy everything out into a temporary directory. Allow the installer to fail, and delete everything within the SRAnipal directory, (this may lead to you needing to kill a running sranipal process). Then, copy everything from your temporary directory over to the original SRAnipal directory and execute the sr_runtime.exe. This worked for me, and no clean boot is needed. Seems the error is thrown after the actual install process, so nothing is missing even though it didn't 'complete the install'.
