Hook list (cron jobs) doesn't display

This is going to seem strange to you as it did to me. When I first installed supercron, the admin/settings/supercron page showed all hooks and I was able to run and see the times and other statistics. But after testing each hook individually at some point (I think the search hook) the hook list was gone. All that was in it's place is shown in the attached picture. An empty listing like this ...

Invoke all cron jobs
(empty) (empty)

check box
check box
a 6 char box with numbers from 0 to 19 (all my hooks I guess)
a 10 char box empty

this repeated down.

The strangest part is that i deleted that test site. re-installed the exact site, re-installed supercron, and went back to the settings page. yet the interface was still gone.

[This is getting stranger as I write this.]
As I was writing this issue, I thought why not clear the cache. In doing so and refreshing the page, the hook list is displayed again! Plus it has data in it. This is a clean, install of drupal and db yet the Last Called and Execution Times had data in it. Exactly as in the previous install.

[More testing as I write]
It seems the search hook is the problem. My site has 865 items to index so I set it to re-index, set admin/settings/search Number of items to index per cron run to 500. then ran just the search hook using supercron's UI. On refresh, what I described in the beginning of this issue showed up. So cleared the cache. and it showed up.

Later, i'm not sure why, but supercron disappeared. I went to the permissions and it wasn't there. I became user1, it still wasn't in permissions, went to the modules and just clicked save without changing any modules. It appeared. I went back to regular admin and it's available again.

I have D6.17 and Jun 11, 2010 SuperCron 2.x.

hhmm. Thought to tell you in case it helps your development efforts.

I'll be happy to test something for you.