Hallo Rene!
Hast du es schon mal mit anderer Reihenfolge versucht? Also satt:
<!-- set the location of the thumbnails relative to the gallery.swf -->
<thumbnail_dir>bildergalerie/wuerzburg/thumbnails/</thumbnail_dir>
<thumbnail_dir>bildergalerie/ausflug_07/thumbnails/</thumbnail_dir><!-- set the actlocation of the actual high-res images relative to the gallery.swf -->
<image_dir>bildergalerie/wuerzburg/images/</image_dir>
<image_dir>bildergalerie/ausflug_07/images/</image_dir>
es so zu schreiben:
<thumbnail_dir>bildergalerie/wuerzburg/thumbnails/</thumbnail_dir>
<image_dir>bildergalerie/wuerzburg/images/</image_dir>
<thumbnail_dir>bildergalerie/ausflug_07/thumbnails/</thumbnail_dir>
<image_dir>bildergalerie/ausflug_07/images/</image_dir>
Mit besten Grüssen
Richard