GonoszTopi, please review 8717 from 21.6.2008.
I don't understand: do you intend 21.8?
I confirm that the bug is present in 20080829 and not in 20080803.
EDIT: For info this bug is NOT present in 2.2.2
I can confirm this issue in aMule SVN 20080825 (amulegui/remote.conf) on Linux.
So the introduction of the bug is from 04 to 25 of August.
I do not understand the issue (I use standard english aMule). Does it work now and not before? or it worked before and not now?
My English is not so good

Try to change language...
super:~ gtoso$ grep Skin Library/Application\ Support/aMule/amule.conf
[SkinGUIOptions]
Skin=System:kde4.zip
Image 1 and 2, then in log:
2008-09-03 18:30:24: La cartella delle skin 'Sistema:kde4.zip' non esiste
2008-09-03 18:30:24: Error: can't open file 'Sistema:kde4.zip' (error 2: No such file or directory)
super:~ gtoso$ grep Skin Library/Application\ Support/aMule/amule.conf
[SkinGUIOptions]
Skin=Sistema:kde4.zip
Image 3 and 4, then:
2008-09-03 18:34:50: Le répertoire de skins 'Système :kde4.zip' n'existe pas
2008-09-03 18:34:50: Error: can't open file 'Système :kde4.zip' (error 2: No such file or directory)
super:~ gtoso$ grep Skin Library/Application\ Support/aMule/amule.conf
[SkinGUIOptions]
Skin=Système :kde4.zip
super:~ gtoso$