Hi, I am also having the same problem when I try to erase my external drive, CCleaner 3.01.1327 Crash log included. No mdp created at time of crash log creation.
11:40:41:874514[iNFO ] CCleaner v3.01.1327
11:40:41:878514[iNFO ] MS Windows 7 Home Premium 32-bit
11:40:41:878514[iNFO ] Genuine Intel CPU 2160 @ 1.80GHz
11:40:41:879514[iNFO ] 2.0GB RAM
11:40:41:879514[iNFO ] ATI Radeon HD 4300/4500 Series
11:40:41:880515[iNFO ] Application Started
11:40:42:494036[DEBUG] Initializing Stop request...
11:40:42:494036[DEBUG] Finished Stop request
11:40:42:599038[DEBUG] Initializing Stop request...
11:40:42:599038[DEBUG] Finished Stop request
11:40:42:644038[DEBUG] Initializing Stop request...
11:40:42:645288[DEBUG] Finished Stop request
Regards
John.