Re: VMware vCenter Converter Standalone 5.5.0 build-1362012 - unknown internal error when trying to P2V Windows Server 2003 SP2

Your error is:

2014-04-28T14:35:20.328+01:00 [04528 info 'Default'] Building partition list: Can't have more then one active partition on a disk.

You should clear active bit from one of the disks, presumes second one (be careful).

HTH