The file you mentioned, StreamFab.AIO.6.2.0.2.Fix.Dll.R.rar , refers to a third-party modification or "crack" designed to bypass the licensing for StreamFab 6.2.0.2.
“The DLL error was driving me crazy. I almost downloaded a ‘Fix.Dll.R.rar’ link from a forum. Then I ran the Visual C++ installer from Microsoft, and boom – StreamFab launched normally. Saved myself a malware infection.” – Linda K., Quora StreamFab.AIO.6.2.0.2.Fix.Dll.R.rar %7CLINK%7C