Sorry I am not a developer so I don't know where to post this.

Here is the error message :

MySQL Query ( SELECT * FROM `zp_images` WHERE `albumid`= ) failed. MySQL returned the error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1

Do you know where does it come from ?

Thanks

What Zenphoto version and where exactly happend this, what exactly did you do?

I have the 1.4.1.2 [7836] version

so to sum up:
- I created a new sub-album with a new name
- Moved the pictures from the old sub-album to the new one.
- Wanted to deleted the old sub-album who have no name.
- Have the MySQL error

The error appears in the Admin session.

Thanks!

Have you tried the current version of zenphoto or even the nightly build?