Hi Frank,
If I enable html compress it works.
I add to the line "Folgende Skripte von Autoptimize ausschließen:"
d,smowtion_size,sc_project,WAU_,wau_add,comment-form-quicktags,edToolbar,ch_client,custom-background how you mentioned.
If I enable css compress the background on my site is "grey"
If I enable JavaScript compress the scroll gallerie did not work
http://wordpress.org/plugins/bmo-expo/
Example http://oldtimer-veranstaltung.de/2014/02/wiedergeburt-eines-skoda-unikats/
Thank you for help
mustermann