error when taking back up

Traceback (most recent call last):
File "gmb.pyo", line 1225, in backup
File "gmb.pyo", line 956, in store
IOError: [Errno 2] No such file or directory: u'C:\\Program Files\\GmailBackup\\messages\\da\\LC_MESSAGES\\New Folder\\2010_07_20100710-193714-walkin@chetanasforum_com-(FRESHERS)_[_10_Jul_]_50_IT_Jobs_@_IBM_Flexorbits_Wipro_Global_Analytics_India_Digiblitz_Teledata_Fidelity_India_Inventcorp_(_ChetanaSforum_)-1.eml'