Hi all,
I have found quite some entries for the "closelabel.gif" problem. But mine seems to be different.
Here is the link to the gallery:
www.amridesign.com/fihalhohi/index.php?option=com_content&view=article&id=10&Itemid=9&lang=en

I´m using SIG Pro 1.2 and Thickbox Popup Engine because the others don´t work properly. Here is what happens:

Known issue: IE shows missing link and firefox not even that.

BUT here is the link to the image in the sourcecode:
www.amridesign.com/fihalhohi/plugins/content/jwsigpro/slimbox//closelabel.gif
so the setting for the language is missing, the correct path has to be:
www.amridesign.com/fihalhohi/plugins/content/jwsigpro/slimbox/english/closelabel.gif

I have Joom!Fish installed, and enabled the radiobutton for Joom!Fish support in the SIG Pro Plugin Manager.

EDIT: when I disable Joom!Fish support, the closelabel.gif is visible.

Any idea what I could do?