attempt to call field 'isTouchScreen' (a nil value)

[Former user]

When executing:

love.window.isToucshScreen(1)  

or

love.window.isToucshScreen()  

[Alex Szpakowski]

That function only exists in the unofficial Android and iOS ports of 0.9.2, it doesn't exist in LÖVE 0.10.0 at all (hence why it's in the "Old LÖVE 0.9.2 for Android API Documentation" section of this wiki, and not in the wiki at love2d.org).