The problem is:
2013-05-23T18:24:38.046+01:00 [00608 info 'Default'] Found volume with name "\\?\Volume{718ff21a-9a19-11de-8af7-001560ac7a82}\"
2013-05-23T18:24:38.046+01:00 [00608 warning 'Default'] Failed to get capacity for \\.\PhysicalDrive0: error opening disk device: The process cannot access the file because it is being used by another process (32)
2013-05-23T18:24:38.046+01:00 [00608 warning 'Default'] Skipping hard disk '\\.\PhysicalDrive0'
So you need to discover which program disables access to your C: drive
HTH