Custom tables widget does work with WP 3.4.2

If I were you, I’d try to find another plugin that does what you need. This plugin only lists compatibility up to 3.2.1, and is rated quite poorly; it has more 1-star votes than it does 5-star votes. Sorry I don’t have a replacement to recommend.

Anyone have a recommendation for another plugin?

If you start a new thread stating what your specific needs are, i.e., “I need a plugin that does X and Y but not Z”, you’re more likely to get a response. Your new thread will be listed with all the other posts without replies, which get more views.

Good point, AK Ted. I will do just that.