I have the same problem after the update to 12.04 LTE.

The image starts example: /images/<filename>/d1p1.img but stops random.

([I][SIZE=12px]“Can’t read the following volume file”)[/SIZE][/I]
/images/<filename>/d1p1.img.001
[I][SIZE=12px]Enter another full path[/SIZE][/I]

Only big files produced this error not smal files.

Please help