There is a new public beta version of the Guglhupf XML Transformation Engine which includes several bug fixes. The most important fixes were a bug in the implementation of the "return" - statement and a bug in the symbol table lookup in multiple XTL source files.
See our mantis bug tracker at http://guglhupf.net/mantis for more details about the fixed bugs.
You can get it from the Download Page of XTE. You can subscribe to new
releases of this project at http://freshmeat.net/projects/guglhupfxte/ (You will be informed about new releases).