I just installed ZenPhoto and uploaded png, jpeg pictures. They show in the Albums, but they don't show in the gallery?

Please see the trouble shooting.

Sorry, i looked everywhere, FAQ, i googled. and where can i find your trouble shooting?

On our user guide

Code does not need updating. You need to learn how to use a search. User Guide search for "trouble" will yield 5 items, one of which is the troubleshooting guide proper.