I downloaded it a long time ago from Interact. It's the Newest DexDrive driver out there. Extract all files to a new folder, click on setup.exe or Autorun.exe. After installed, copy the .ini and .inf files and paste them to C \WINDOWs or c windows\system or C \WINDOWS\system32. This gets rid of the 'Index file is missing' DexDrive should run without a problem.