I’m actually having this issue on my own site (givememyremote.com). If I try and activate the plug-in in the post (on FireFox), I get a blank screen. The only way to use the gallery is trying to upload the photos via the sidebar option and hoping the gallery coding (with an updated gallery #) works. It only seems to work about half of the time right now. I attempted to deactivate and reactive the plug-in to see if it might work, but it didn’t do the trick. (Apologies, @garlof, not trying to hijack your thread, but wanted to share you aren’t alone here, so maybe it is a bit more widespread.)