RE: Import condition text file format

Hi Alfredo: 
When trying to use the conn_importcondition('.csv') command, I keep getting the following error in Matlab:

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Error using dataread
Trouble reading integer from file (row 1, field 2) ==>

Error in textread (line 171)
[varargout{1:nlhs}]=dataread('file',varargin{:}); %#ok

Error in conn_importcondition (line 102)
[conditions,nsubs,nsess,onsets,durations]=textread(filename, '%s%d%d%s%s','delimiter',',','headerlines',1);
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A few months ago when setting up a different study I was able to use it without problems, and I'm wondering if something changed / how to get around this. My conditions csv file is formatted according to guidelines (header line, 5 columns, 0 and inf for full session, blank for all subjects). Apparently it's not liking the blanks, but when I remove them and try again it fails with a different row that contains text instead of an integer (e.g. header). 

Your help and tool are much appreciated! 
Thanks,
Alex