After extracting and comparing the HTTP and FTP files, I believe the HTTP package contains outdated files.
For example, the modification dates of the files in the HTTP's "Lang" directory are all 2011 while those from the FTP package were changed in March 2012. Contents differ as well, e.g. die FTP Lang files contain more strings than the HTTP Lang files, and mistakes have been corrected. The file "Context/CSS.DEF" contain the strings "last update: 26.10.2010" (HTTP) and "last update: 20.03.2012" (FTP). Files in the following directories are affected: Context Convert Lang Script Syntax Template root: TiDyCFG.ini -- <http://forum.pspad.com/read.php?2,59728,59758> PSPad freeware editor http://www.pspad.com
