Hi, Lena-
I think the issue might be that if you are using a dataTable file, the contents of that file should not have a quote around the subbrick selectors, nor does there need to be the continuation-of-line characters "\" at the end of each line.
Note that the syntax of your current table---*with* those apostrophes and "\"s---would be correct if being used directly as part of the 3dMVM command in the shell. Those special characters are needed because of going through the shell interpreter to get to AFNI.
So, I would make a copy of that data table, and remove the single quotes and the backslashes, and see if that solves it.
--pt