reorder images not working

What theme are you using now? Drag & drop works just fine for me when creating a gallery using the original Twenty Ten theme.

I will install the original twenty ten theme and see if that works also on my server.

Yes, the original twenty ten has no problem. I’ll have to check my changes. Thanks for your support so far!

Do you have a clue witch php.file or lines I have to look at?

Not within a custom theme, no. Sorry ??

I understand. Thanks for the support.