As you have some experience with administratintng MediaWiki installations: Do you know if these two extensions work together? As Parsoid tries to parse pages only partially, there could be a problem here, but I didn't test it yet.
Topic on User talk:Kghbln
I am afraid that I cannot tell. I have only a very few wikis to attend to what have both extensions installed. In all cases I believe that they are not really using Variables. At least they have not complained to me. However if you would like to test yourself you may do so at https://sandbox.semantic-mediawiki.org/. I am not sure when I will be able to do so myself.
Oh, thank you! I just wanted to avoid setting up Visual Editor myself, so this can help me out.
Well, then this wiki is one for you. Note that Visual Editor is only active in namespace "Extra". Once you created an account I will add you to the sysop group.
Ich merke gerade, daß Visual Editor auch im Hauptnahmensraum läuft.