Compatability problems with PHP5 (XML) and Tidy extension

Due to my testing/development platform, a few problems with PHP5 went unnoticed.
Specifically the combination of the PHP5 DOM and the tidy extension.
Both had been developed in parallal, but not together. It seems in certain cases tidy returned an object (not a string) which normally wasn't a problem as it came out OK when printed.
However, when used as input to the XML processor, Apache went belly-up
child process exited with status 3221225477

Soooo. I just made sure to cast into a string before sending the pages down the pipeline.

A few other XML functions needed renaming also.
Anyway, things should be much better on PHP5 now.