Yes, there was a problem with our build process that corrupted some FCKeditor unicode files. We have just uploaded a build that fixes the problem. Make sure that you get build 5.0.4004.
I got similar problem, hope that ít is resolved soon!
The problem has been resolved. Please get the latest download.
Copyright (c) 2006-2012 SplendidCRM Software, Inc. All Rights Reserved.