I've installed Simple Image Gallery on a Joomla 2.5 website, but the navigation tip doesn't work. It says "JW_SIG_NAVTIP Photos" instead of the navigation tip that's suppose to be there.
From what I understand, Joomla 1.6 and 1.7 extensions are suppose to work with Joomla 2.5. I can see the pictures and they enlarge like they're suppose to.
My site is hammerpointrental.com/photos.

This is the answer Fotis provided in the past for the same problem:

The problem obviously lies with wrong permissions... So installing the latest SIG version just won't override some files... I strongly suggest you download Admin Tools from akeebabackup.com and use the built-in function to repair permissions. Then install the latest SIG version.

If that doesn't work, consult your hosting company, cause sooner or later you WILL stumble into a weird situation with another component, related to permissions... One more thing... make sure you don't see an old override in your template... can happen sometimes..