You don't have to repair the .cue file - you can just make another one (it only takes a few seconds). Just copy this into a notepad, replacing nameofimage with whatever your .bin file is called:
FILE "nameofimage.bin" BINARY
TRACK 01 MODE1/2352
INDEX 01 00:00:00
Make sure you save it as a .cue file, and not a .txt file, or it won't work.
Hope it helps,