[R] Error in lmer: asMethod(object) : matrix is not symmetric [1, 2]

[Ben Bolker]

Ben Bolker <bbolker <at> gmail.com> writes:

> 

  PS this error message is listed in http://glmm.wikidot.com/faq --
if you google 'lmer "matrix is not symmetric"' it's in the hits (although
pretty far from the top, alas).  I've added a little bit more discussion.