[Erppcatoolkit-support] initial errors - unsure what to do..?

[Andrew H. <and...@uc...>]

hello,

i've just begun exploring EP toolkit, to work with a bunch of .set  
files that were created from neuroscan .cnt files, imported and  
epoched by event type in EEGLab.   in trying to begin the  
"Preprocess", i'm just getting errors, using .set as an input type,  
1:750 and 1:150 as points and baseline (3 second epochs) and selecting  
an individual subject .set file (epochs of one trial type):

??? Attempt to reference field of non-structure array.

Error in ==> ep_stripAdds at 59
     if ~isempty(find(strcmp('RAW',EPdata.subTypes), 1))

Error in ==> ep_artifactCorrection at 543
[data]=ep_stripAdds(data);

Error in ==> ep at 727
         ep_artifactCorrection(inArg);

??? Error while evaluating uicontrol Callback


abandoning the Preprocess, i instead tried to create an (unartifacted)  
"Average" from similar .set files, but after the prompt for the save- 
as file type, i get:

??? Error using ==> read_header at 747
unsupported header format

Error in ==> read_data at 282
   hdr = read_header(filename, 'headerformat', headerformat);

Error in ==> ep_readData at 554
         [theData]=read_data(fileName,'dataformat',fileFormat,  
'headerformat',fileFormat);

Error in ==> ep_averageData at 118
inputData=ep_readData(thisReadArg);

Error in ==> ep at 911
          
averagedData 
= 
ep_averageData 
(sessionFiles 
,importFormat 
,fileType,averagingMethod,EPmain.preferences.average.trimLevel);
??? Error while evaluating uicontrol Callback


this is on Mac OS X 10.5.x, Matlab R2009a, with 4gb of RAM, and dual  
2.8 Core2Duos...

what am I doing wrong?
or is something else going on that needs to be addressed?

thanks,
andrew