matrix multiplication

Dear all, 
Sorry to bother you with such a stupid question, but I just cannot find
the solution to my problem.

I'd like to use matrix multiplication for meanA and factorial 3. 
I use the command meanA%*%factorial 3. 
But everything I get is: Error in factorial3 %*% A : non-conformable
arguments

I know that the number of the columns of the first vector has to be the
same number of rows of the 
second vector to be able to use matrix multiplication, but that is the
case here. I also tried it with 
two columns for factorial 3 and that didnt work either. 

Can someone help me out with this?'

these are my matrices:

meanA
         [,1]     [,2]
[1,] 3.666667 4.666667

factorial3

     [,1]
[1,]    1

Thank you so much!
Cheers, maria