Attribute extension form names are showing as GUID when you view them under data forms.
Download and install the latest patch, which contains all fixes from previous patches. If you are running an older version, download and install the latest version and then the patch.
Steps to Duplicate
1. Go to administration > Attribute category > Attribute Form Extensions’ tab > Add an attribute form extension using any Data forms 2. Go to Administration > Application > Features > under ‘New Features’ click on ‘New data forms’ > it shows GUID under name