I am testing/working with In-Portal 5.2.x branch (5.2.0-B1 - not release yet) and came across some issue with Shopping Cart in Advanced theme.
There was some refactoring done to In-Commerce module to introduce some new great functionality. Now while testing the Advanced theme I came across some Fatal error after adding a test Product to my cart and going to the
See it here - http://screencast.com/t/MaEet3sF
I didn't reopen any specific task since not quite sure which one it belongs to, but I think it's clearly part of In-Commerce or Refactoring part of In-Portal so we might just commit the fix (once ready) it as part of it since this has not been released anywhere yet.