Short and sweet today but important none the less ...
We finally got to the bottom of the issues some of you were experiencing with the Template Builder when trying to connect to the BIP server in 10.1.3.2.x. There was a problem in the .NET compile environment we were using, got that fixed and rebuilt the plugin and things are now fine. There is a new download available from the download page on OTN, please hold off on the download until after 1pm PDT when the new file will hit the streets:
http://www.oracle.com/technology/software/products/publishing/index.html
You must uninstall the original version you have and install this one afresh but the connectivity issues will be fixed.