Sorry for my reading skill.
I think you have following problems:
Value for ID shouldn't repeat similar value from mp source. In pv you set ID for preview map, while in mp you set ID for detailed maps. Maybe it is not a real problem, but general rule is that these ID should be unique for each img.
In section [FILES] you should have true names of img that you have compiled. I guess that real name is 64424303.img. You should add path to this file, if it is not present in current directory, which probably is C:\cGPSmapper, as shown in your post.
CGPSmapper creates an *.idx file for each *.img. Both files are used by cpreview. Make sure, that *.idx files are in the same place as *.img, when executing cpreview.