Current script

Trying to analyze the effect of block for the XAB task. I can't figure
out why analyses of interactions involving block and xdist aren't
working. The data frame I'm using, which I've just uploaded, looks fine
to me--everything is in equal proportion for block and xdist, there are
no repeat subjects, and there are fewer missing values than for the SD
data frame. I'm plugging all the right columns into the ezMixed analysis
as far as I know.