If you can create a package using the new beta build that consistently deploys a sproc with a null value then by all means attatch it here, I'd like to be able to get in and give you a more specific answer. As it stands however, I can't deploy the package you sent to Trent for the reasons I already listed. We can't deploy a DDT package created on versions of Strataframe prior to the current beta build due to structure changes in the package file. Sending me the old package file does no good as I can't deploy it on my side.
My guess is that the deployment failed in the past and left the orphaned sproc out there which is giving you the problems, but I can't confirm this based soley on log files.