Okay, redownload and upload the vaispy.php script; when I loaded your page it didn't like an ampersand in the title.
Code:
Error: not well-formed
Source File: http://www.guitarblast.com/vaispy.php?do=xml&r=0.9394500932840069&_=
Line: 45, Column: 34
Source Code:
<title>Perfect Strangers (mange & Fredrik)</title>---------------------------------^
I added a call to htmlspecialchars_uni for the title and forum names.