I am a relatively new user and I am trying to open my csv data files in Shazam but it freezes up each time. At first I got warnings on the no. of columns etc. and broke up my files to experiment with different sizes (even though it is a small dateset with only 169 observations). I managed to read in two files after repeated tries, but now Shazam is freezing each time and with only five or six variables in the dataset. What might the problem be?