Migrate from 14 to 15 -- Broken

[LorenSzendre]

I just updated from IW 14 to 15.0.12, and after recompiling my big app and trying to run as SA -- I can't access the app at all. Clicking the Firefox button I get:

The page you are trying to view cannot be shown because it uses an invalid or unsupported form of compression.

Issue #2

When I deployed on my real server, my Logon button (from a template) stopped working altogether.

Any ideas?

Loren