I'm just checked out from CVS HEAD to test a plugin. I can see the sub-tab that I created in Tools, but when I click on it, nothing happens. The url for my new tab is

/admin.php?ctrl=crontab&tab=plug_ID_13

when it should be

/admin.php?ctrl=tools&tab=plug_ID_13

If I click on the Misc tab first, then the tab created by the plugin, it works.

This is probably simple to fix and I would do it, but I don't have access.