When attempting to run a file synchronization on a previously migrated volume mapping, NDS Migrator hangs. This seems to only occur on Synchronization migrations, and not initial data copies.
If this Registry key exists....
HKEY_LOCAL_MACHINE\SOFTWARE\Quest Software\NDS Migrator\Miscellaneous\
NoRootPermissionsOnContentsOnly REG_DWORD value=0
...it may be causeing this. This will occour on a NAS device target, this should not be an issue with physical Windows servers.
Back up the Registry on the NDS Migrator console, and delete this key.