Try giving your blocks names in the homepage CMS page. Similar errors I've received have been resolved this way. I see that you're trying to wrap the blocks in text lists, but from what I see you never actually identify the blocks from within the CMS page. Try something to this effect instead:
{{block type="test_tester/one" template="tester/one.phtml" name="testa"}}
{{block type="test_tester/two" template="tester/two.phtml" name="testb"}}
If you cannot get away from the parent blocks as containers, you may have to rethink part of your layout. If that doesn't do it either way, let me know and we'll try something else. Hope that helps.
Thanks, Joe
Joseph Mastey
2010-01-25 09:31:17