I upgraded to 0.9.4-pl with WP 3.2.1, and it all fell apart. I did find a major problem, but I do not have it working yet.
I am using two different Custom Content Types with the plug-in. After the upgrade, one of my content types was not showing. I went in and saved without looking, and I later found that the data from the first Custom Type had replaced the data from the second type.
After updating the data for the custom type, all of the posts for each type was fine. However, the redirects were still not working. After I deactivated/reactivated the Custom Post Types it all worked.
In summary, something is wrong with the upgrade process. However, the plug-in seems fine otherwise. There wasn't anything that re-saving and reactivating didn't fix for me.