python project shows no files after plugin update from 2.10.0 -> 2.10.1

Hi Folks. The 2.10.0 plugin has been working for many months, but today when I updated to 2.10.1 my python project no longer

shows any packages, just files at the project's (Git) repository root. I tried re-opening the project, restarting IDEA, unchecking the plugin, restarting, checking it, and restarting, but no joy. I also tried downloading the 2.10.0 version from JetBrains Plugin Repository :: Python ( http://plugins.jetbrains.com/plugin/?id=631 ) but got an error: "Plugin Python is incompatible with current installation". Drat! This is a major problem. Suggestions, please? Thank you -- matt

idea/plugin version combinations:
intellij    python plugin    result
12.1        2.10.1           nope
12.1        2.10.0           Error: Plugin Python is incompatible with current installation
12.0.4      2.10.1            ""
12.0.4      2.10.0            worked

Mac OS X 10.7.5