PROS Error

I just got started with pros programming and I made a test program with the default program and I was trying to download it to my v5 brain where I got this error, image
Does anyone know what mat be causing this error?

The error message would suggest that one of the files required for compiling is not included in your PATH variable. Open a command prompt window and input

This should return a list of all the files auto included with your PATH variable. In my installation, the full /bin directory was included. If you find that the file is not included you can attempt to find the /bin directory in your install and manually add it to the PATH variable. If the file is included I would recommend simply running the PROS install repairs.