[Eeglablist] pop_comperp problem

[Arnaud Delorme]

Dear Zori,

this is because you have set the option to store only one dataset in 
memory. The pop_comperp() function cannot find the data in the different 
datasets if you have that functionality on. Simply change the option, 
reload your datasets and it should work. It would be great if you could 
enter a bug report at

http://sccn.ucsd.edu/eeglab/bugzilla/

Note also that it is better to look at grand average ERPs using the 
STUDY functions (and menus) which are designed to do that (and much 
more). The pop_comperp() function will be soon reprogrammed so that it 
takes advantage of STUDY functions.

Best,

Arno