Input format fieldset is blank/missing

Same problem here.

it missing a tag on Input Format

I'm finding that this is happening on many parts of my admin, but only in Firefox. In Safari, yes, I'm on a Mac, everything is visible. I've also tried many different themes and they all have the same problem of invisible options.

Other notable missing twirl-down missing options when creating a node are:
Menu settings, input format, location (installed module), book outline, revision information, file attachments, comment settings, authoring information, and publishing options.

Oddly, URL path settings twirls open and closed properly and is has expected options. I think it has something to do with the fact that the URL path settings options are instructed to be open by default. If I close that panel, it often won't work when I reopen it.

Another annoying thing that's happening is when I twirl open an item in the admin area, the page pops the scroll to the top so I have to scroll back down to the option I was just opening. Grr.

BTW, I also checked the source and the proper HTML is there as well.

I hope this info serves to better explain the situation other folks are having as well.

I've also attached a screen shot to show you what's happening. Notice the triangles are all pointed down, but only the URL path settings has any visible options.

As for when it started happening, I'm not sure. [sigh] I recently upgraded to drupal 6.5 and I've been testing out IMCE, and other image modules.

Thanks for your help. I'm pulling my hair out.

The collapse.js just needed to be added. Fixed.

I'm working with a production site and don't want to upgrade panels to the dev version there, so i've added this to my template.php to make sure that collapse.js gets added when logged in, i can see that the collapse.js is getting added fine, but I still cant open the input formats area. Is there a different hack i could make until the next stable version comes out?

//this appears in my theme template.php file
global $user;
if ($user->uid == 1) {
	drupal_add_js("/misc/collapse.js");
}

Here's the fix if you don't want to upgrade to dev (like me - just a bit nervous on a production site)

in panels/includes/ajax.inc
add this line around line 33 (anywhere with the other js bits will do)

drupal_add_js('misc/collapse.js');

If anyone can give me some pointers on making patches (i'm using VersionsApp for SVN if that helps) then i'll climb one notch on the dev ladder (not quite there yet)

Just ran into this last weekend during an install at godaddy.com. They provide a previewdns.com service to allow developers access to the site before going live, but unfortunately creates the same issues with missing panels as described on earlier posts. As a side note, the FCKeditor module also is affected, with the WYSIWYG panel going missing.

To fix, install the AdBlock Plus extension and add a rule to block "http://support.previewdns.com/mt.js". At least while you're site is development, you will be able to see the pages normally, with all the menus acting normally again.

Note: Your client will also need this extension installed to view properly.