Ancient
If I have sent you to this page, it means you are on an old version of kJams.
Please update to latest before sending any bug or crash reports, as the problem may already be fixed!
Just run kJams and it should ask you to update. If it does not, check your General preferences, you should have "Check for updates" set to "Every Launch". Or just go to the Help menu and pick "Check for Update".
If the auto updater fails, just go to the downloads page and download kJams, and install it over your existing one. You do not have to pay again, you will not lose your data.