Often many people asking same question over and over, gonna try to keep an updated list of some answers and keep some interesting threads here too.
Config: How to display my logo above the menu?
Few steps process actually:
Speed: How fast will it work with my images? How to make it faster?
If you using thousands of picture Imagevue is becoming filesystem demanding, especially with large image and folder arrays. The slowdowns can be alleviated by using proxy server on site or by moving to a faster host.
Email: Everything is enabled but still getting error "could not mail"
We use php mail() function, no smtp or anything, simplest function. On some servers it might be disabled. Before posting about that issue please read:
DRM: Any way to complicate lives of image leechers?
You can disable all ways to get image or image url, there are quite a few actually:
Error: Failed to write session data
This happens every so often, session data is some small info to identify user who is logged in. This is stored on server, in temp directory. But sometimes this is either misconfigured or just directory not created or unwritable. We can't fix it, this should be forwarded to your hosting support.
Upgrade: How to convert v1 gallery to X2?
Not that this asked frequently, but worth mentioning anyway:
Upload: Why I can't upload files bigger than X Mb?
This restriction is set in php.ini in upload-max-filesize. If you don't have access to php.ini, please consult your hosting provider about how to change it.
maxupload: http://en.php.net/manual/en/ini.core.ph ... x-filesize