Thread:Project:Support desk/WAMP MediaWiki Examples don't work/reply

Only guessing: I once had the problem that Special:Version did not show up anymore after I changed something in an extension. In my case it turned out that I had an error in the array with the information about this extension, which are displayed on the Special:Version page. The result was that the whole page did not show up anymore (while the rest of the wiki still worked). Once I fixed this error, the page showed up again.