Failed to load File Type Definitions on R-studio

Hello Everyone,

I have been trying to create a custom known file type on R-studio for an MP4 file created using Sony XDCAM-EX when I encountered the below mentioned error. This is how I tried to create the file type definitions: First of all I found a signature for my known file type. Then I wrote a known file type description XML file. Then I attempted to validate and add the XML file to R-studio. But at this point, I get the below mentioned error and could not proceed further. What should I do to fix this issue and continue with creation of file type definition? Please help. Thanking you for tips to resolve this problem.

Failed to load File Type Definitions from “D:R-

StudioKnownFileTypesSonyCam.xml”.