multicomp on repeated measures

[asanquer@virbac.fr]

Hi,

I hope someone could help me to solve this problem:
I have performed an analysis of variance on repeated measures like this:

aov1 <- summary(aov(y ~ group + Error(subject) + time + group:time,
   data=data1))

The group effect is significant, and there is three groups. So I would like
   to know which groups are
different with a Tukey test. But when I use the multicomp function like
   kelow, there is an error.

multicomp(aov1, focus="group")

Problem in multicomp: argument focus= not matched: multicomp(aov1, focus
   = "group")

I think the solution is certainly simple, but I do not find it.

Thanks for your help.

Annaële