Error in creating a port or deploying a BizTalk solution using MSI

Error in creating a port or deploying a BizTalk solution using MSI:

I recently came across this error while deploying a BizTalk 2006 solution and importing the MSI that I created in dev box. I was clueless on this error. It seems that some permission issue is there.

Then I tried to create a send port manually in the BT admin Console. I got similar error:

The I figured out that my login should be a part of BizTalk Administrators Group in the Box. I added myself in the group and it worked fine.