Thread:Extension talk:VisualEditor/VE not loading: solved - latex style was missing

Hoping that this helps somebody else save a lot of time: On one of my installations, VE just didn't load (progress bar animation, but nothing more). On a second system I have exactly the same setup and database and it worked, and for a long time I couldn't find any difference between them or find any error messages. It turned out that it wasn't the mediawiki installation at all, but that the latex style "cancel.sty" had gone missing for some reason (on Ubuntu it's in the package texlive-formats-extra, which I had probably removed by mistake). I had tested Latex and equations had worked before (possibly before I lost my cancel.sty?) so I didn't suspect any problems with Latex.