It looks like your build process has failed on version 4.1.0.256. The setup for iw15.2.5.exe is only 84.9 mib and when you download it, the file will not run.
This error is because the IDE found an older version of the CVDEV dcus, you need to replace this old dcus with the ones compiled from source or you can add the CGDEV sources to your project, so they will be recompile and auto use the new ones by your project. First solution is better.
Sometimes it takes someone pointing out the obvious, to get you past the issue. It turned out one of my paths for my 64 bit compile was set to my 32bit directory so every time the dcu was created the program was looking at the wrong version of the dcu.
I was able to get everything to compile so I am working now.