If you have been playing around with the mc2xml scripts with different attributes (e.g., you start out the the fairly standard -T attribute but want to switch to the -J JSON version to get season/episode data and two weeks of programs), be sure you delete the mc2xml.dat and xmltv.xml files in the scripts folder before running the new version. I had problems making the transition initially, but deleting those files did the trick. I then checked mc2xml.dat's contents and found that it stored the name of the numeric lineup I had selected when running the -J script manually the first time (so that it doesn't have to prompt you again for the lineup number, allowing you to automate running the script thereafter).
I'm thrilled to say (hope I'm not boasting) that with the -J format, slimmed down processing with mc2xml.chl I detailed earlier, and Automator/Calendar for automated daily updating, my ancient eyeTV HD box, current software, and Schedules Direct listings have me back to nearly full speed (the listings details aren't always as complete as TVGuide). It has been quite a journey in this forum, starting out with TitanTV and ending up with JSON from Schedules Direct. After letting it run a few days, I'll sign up for the subscription.
The question looms: How long before the eyeTV software breaks with a MacOS X update? Another bridge to cross in the future.