Error in loading covariables when doing batch FC analysis

I was doing the batch FC analysis. I listed the subjects' covariables (9 variables) in a text file (Covlist.txt) as follows, 
C:\REST-analysis\Cov\Sub_001_detrend_filtered_cov.txt
C:\REST-analysis\Cov\Sub_002_detrend_filtered_cov.txt
C:\REST-analysis\Cov\Sub_003_detrend_filtered_cov.txt
C:\REST-analysis\Cov\Sub_004_detrend_filtered_cov.txt
......
C:\REST-analysis\Cov\Sub_017_detrend_filtered_cov.txt

But when I loaded the subject's data and  the Covlist.txt, then run, the errors appeared like this:

              Exception occured. (MATLAB:load:unknownText)
              Error using ==> load
              Unknown text on line number 1 of ASCII file C:\MCI-REST-analysis\Cov\Covlist.txt
              "C:\REST-analysis\Cov\Sub_001_detrend_filtered_cov.txt".

I couldn't handle it alone. Could anyone offer me some comments? Many thanks!

frog
09-09-30