0.85.4 hard on the heels of 0.85.3 includes a fix for encryption problems which turned up in the forums
http://community.sharpdevelop.net/forums/thread/18693.aspx, one for the power of open source!
Its best to get this out there asap.
The help file has also been updated a bunch and is now being generated with Sandcastle Help File Builder.
0.85.3 is available for download!
Dont forget if you download the help file to unblock it in the file properties dialog using windows file explorer!
Please bear with the samples code the projects are a bit messy!