This came up yesterday as well. You can see the thread here[1]:
In short, GAE 1.3 broke Click's automapping ability in production mode. Until
we find a proper fix
the workaround is to manually map the templates to pages in your click.xml
file. This is a bit of
pain but should work reliably.
Hope this helps.
One solution could be to generate that mapping (not writing it
manually), by running Click locally in debug mode (and automapping
enabled), than use the log output to generate with a little regexp the
new click.xml for GAE with all the mapping statements.
This works pretty well even for hundreds of mappings and takes only a
few seconds.
Adrian.
