We are upgrading from the CE build 4.20.17 (on the BitsyX) to build 4.20.37. It looks to me like the registry entry to hide the shell in 4.20.17 was moved from HKEY_LOCAL_MACHINE\Platform\BITSYX\LaunchCEShell to HKEY_LOCAL_MACHINE\Platform\LaunchCEShell. Is there a definitive list of registry entries and their new locations somewhere?
Thanks for your note. That key change was made to allow us to better share our code across platforms. I don't believe that there are any other BitsyX-specific keys that changed. You might also want to review the spec changes that occurred since 4.20.17.