[Eeglablist] Error in Calculating Difference Waves

[Raechel Steckley]

I am a relatively new user (1st year grad student at UCD) of EEGLAB.  I 
am trying to use the GUI to make a difference wave between correct and 
incorrect trials in 2 participants.  After loading the appropriate 
datasets and inputting to Average Dataset 2 4 and average and subtract 
dataset 1 3, the gui returns an error message that dataset three contains 
a different number of channels than the other datasets and quits running 
the pop_comperps at that point.

My question is how to get around this.  All of the subjects we are using 
have a different number of channels to average across, depending on which 
channels we've removed during preprocessing.  

Any help is greatly appreciated.

Raechel Steckley, B.S, B.A.
Graduate Student
Department of Psychology
University of California, Davis