one of your xml files is messed up.
I have send you an email with the 1.3c build where I have added the filename to the error message!
replace the inc/readxml.inc.php.
(you can make a complete update too. biggest change is that TWG can do dynamic background - mean your backgroundimage is resized too (html does not do this
) - and some small other enhancements and bugfixes)
Because it it plain xml you can either look at the file or just delete it. depending on the file the data in ther is lost.
If you don't mind please send me the corrupt xml file and I check where the error came from.
Then I can check if is is an error in the script or it was a problem of the file system writing the file properly!