Using Beta 2 open the attached file with a clean config. Line 2 has very many columns as this was a status display from a very long running program using \r to display new status on the same line.
With a clean config and wrap line length (Tools>Options>File Options>Load) set to 4000, I don't see the line getting wrapped, line 2 has 106468 columns!
I think the failure to wrap caused a search I did (Big Find with "List all occurrences" checked) for "Est Total:" to lock up SE, you can see if this also happens to you.