I just wanted to let you know that this issue you are all seeing is a bug in Web PI that we are tracking with a fix for our next release. In the meantime though I am actively trying to find a URL to the Gallery package that doesn't return a 301.
So please keep letting us know by posting on this forum if you have this issue. It will be fixed in our next release but in the meantime I'm hoping to use a URL that doesn't return a 301.
Thanks for reporting this.
Crystal