I know it's been well over a year since I started this post, sorry for bringing it up but I've lost interest in Zenphoto and integrating SMF for myself, but I know that others are now wanting it to be done...... as for how I posted on the Simple Machines site, they replied with something like this "Quote from: Norv on February 01, 2010, 06:47:23 PM
<quote>In my understanding (note that I could be wrong) GPL licenses are not compatible with many other licenses, including SM license, because GPL licenses typically require that any derivatives of the software (like the bridge) and the software using them (like SMF) to be distributed under GPL as well. SM license is not GPL, so a bridge between them cannot be officially distributed by Simple Machines. (it can be written, but only for "personal use" if I may say so).
</quote>
GPL just plain sucks... Unless zenphoto specifically grants an exception to the GPL restrictions (and has signoff by all copyright holders to do so), we can't build an official bridge.
That being said, none of our developers are currently working on bridges - we are working on the release of 2.0 and will take up bridges and other add-ones after that."