thank you for the quick replay.
i have done the compatibility test, all ok.
i am using the same browser, and i have tried multiple browsers to test.
i have been creating new galleries on the old site no problem.
the gallery.xml file is in the correct place and it's contents look exactly the same as the old ones.
a view source on both the old and new galleries also look exactly the same as does everything in the ftp.
it's very odd (obviously) haha.
i even tried to do it the old school way and not use svmanager at all and create the gallery manually, i get the same result.
the gallery is there in svmanager. all the images and thumbs are shown in the images or sort buttons. and it is in the gallery index. it is just when i try to view the gallery that it doesn't show. the loader bar goes but none of the photo boxes or anything show up after that, just a blank screen (or the little simpleviewer button down at the bottom).
i've tried deleting it all and reinstalling it and recreating the galleries about 5 times already, and im ready to pull my hair out. any other thoughts would be greatly appreciated. thanks again!
i'll keep trying on my end too.