The reason for the strange-char-issue may come from a wrong encoding.
When editing the pixelpost.php file, plz make sure you use Unicode encoding and save it in UTF-8, with Linux Line Endings (LF) and without BOM.
You need a text editor which gives you the choice of encoding... like UltraEdit (not free) or Programmers Notebook
http://www.pnotepad.org/ which is free