First of all, thanks for the great work you've done on this, and on keeping the issue queue clean! With such a complex module it's amazing that you can keep the open issues to a minimum.
On to my issue: Since installing Node Gallery my error logs are filled with these two errors:
Notice: Trying to get property of non-object in node_gallery_api_tokens() (line 482 of /sites/all/modules/node_gallery/node_gallery_api.module).
Notice: Undefined index: node in node_gallery_api_tokens() (line 477 of /sites/all/modules/node_gallery/node_gallery_api.module).
I can't be certain because there are several errors per minute, which prevents me from looking at all of them, but it seems that the error messages are primarily occurring on individual node pages.
The error messages are critical, but it means I can't see any other errors in my logs because these are coming so fast and furious.
I appreciate any help you can give!