Only reconfig task means to click on "Configure machine" in Converter client. Then choose the created destination VM and run the task. On this case the reconfiguration will be done by worker (running on the machine with Converter server) while in your case it has been done by agent, running on the source machine.
A little above error 1450 is:
Error occurred when opening disk set, MNTAPI_ERROR = 130 MNTAPI errorType = 2, errorCode = 8
Windows error 8 is "Not enough storage is available to process this command. ". During reconfig, converter copies registry files, perhaps the source machine disk is full.
I'd repeat POCEH's suggestion - reconfigure the destination directly.
Regards,
Plamen