Kunal,
I do know the process changed moving to 6.0.32+ for the branidng so I do highly recommend upgrading your client for that reason along with all the fixes you will get as well.
I just did a quick test with the 6.0.30.0 version you mentioned but was also unsuccessful (with different errors). I'm sure it can be figured out but I'm not sure the time would be well spent given the newer versions and process that exists.
--Bill