Thread:Extension talk:VisualEditor/Installation doesn't work/reply

Had the same problem. You've probably installed the latest branch, but are using a more older mediawiki install (like 1.23) while mwf are using 1.25. try to install instead the relvant brnach from git: git clone -b REL1_23 https://github.com/wikimedia/mediawiki-extensions-VisualEditor.git if you are using 1.23, or REL1_22 for 1.22.