Gang,

I uploaded the data.

Also, I started running this analysis using the following AFNI version:

Version AFNI_2011_12_21_1014
[[Precompiled binary linux_openmp_64: Apr 24 2014]]


With the above version, it would not allow me to run the "time*score" model,but I could run the interaction alone, "time:score".

I upgraded the AFNI to the most recent version:

Version AFNI_2011_12_21_1014
[[Precompiled binary linux_openmp_64: Jun 17 2014]]

With the newest version, it won't allow me to run "time:score" interaction alone. It gives the following output when the model is "time:score":

Contingency tables of subject distributions among the categorical variables:

Error in xtabs(showTab, data = lop$dataStr) :
interactions are not allowed
Calls: print -> xtabs
Execution halted

The newest version of AFNI will only me to run "time+score" successfully.

Again, I uploaded the data.

Thanks for your help.

Michael