Error in (function (classes, fdef, mtable) :
unable to find an inherited method for function ‘Summary’ for signature ‘"glmerMod"’
I've tried the good old 'turn it off and turn it back on again' trick, but the same thing's happened. Any ideas why it worked yesterday and it's not working today? Thanks.
Oh my god, is it that simple? That'll teach me not to work long past when my concentration has gone! I'll try that - thank you. I swear I looked at it a dozen times and couldn't see any difference between what I'd written before and what I tried today.