3. Ask the development team is there any way to make ExampSource print on which line it stopped?
Actually, we already place at least a message in the message viewer at the bottom (maybe you have to scroll up a bit?) saying things like:
"G Jul 31, 2008 6:53:01 PM: [Error] Data format error in line 6: the line does not provide the expected number of columns (was: 59, expected: 61)! Stop reading..."
if there is something going wrong (here, for example, in line 6). So maybe you just missed this message.
On the other your data file actually simply contains something we did not tried ourself. In the latter case, such a message is probably not provided and we would like to ask if you could provide as a sample of the data (if it is not too sensible) so that we can try to improve the error messages.