It includes an important bug fix for a bug introduced in 1.87.2: The bug: If you created a new app in 1.87.2, then you would not be able to use appadmin for that app.
The fix: - Install (i.e. unzip over old version) 1.87.3 - copy applications/welcome/controllers/appadmin.py over applications/ yournewapp/controllers/appadmin.py Massimo