Notice: Undefined index: comment_node_panel in _field_ui_bundle_admin_path() (line 320 /modules/field_ui/field_ui.module).

Hello,

I have the same issue, even after disabling panel.
I work on Drupal core 7.8 with Chaos tool suite 7.x-1.0-rc1.

Anyone with an idea how to fix it?

Thank you

I had the same problem, which occurred when trying to add fields after creating a content type. I have CTools enabled, but am not using Panels.

I am, however, using Display Suite, and when I went to the DS Layouts tab for the content type and selected a layout (none is the default, so there's nowhere to assign fields for display), the error seemed to disappear.

I don't understand why this is in the Panels queue?

I'm getting about a dozen pairs of these error messages, some examples:

Notice: Undefined index: product in _field_ui_bundle_admin_path() (line 320 of /home/sites/public_html/modules/field_ui/field_ui.module).
Notice: Undefined index: product in field_ui_fields_list() (line 35 of /home/sites/public_html/modules/field_ui/field_ui.admin.inc).

Notice: Undefined index: Array in _field_ui_bundle_admin_path() (line 320 of /home/sites//public_html/modules/field_ui/field_ui.module).
Notice: Undefined index: Array in field_ui_fields_list() (line 35 of /home/sites/public_html/modules/field_ui/field_ui.admin.inc).

I no longer have a content type of "product".

I'm not sure why this is in the CTools queue either?

I see problems that look like they're purely Field API. It's in the CTools queue but the only explanation is having CTools enabled. I hope it's obvious why just having CTools enabled isn't enough to blame CTools for the problem. Is there a deeper explanation why this is a CTools problem and not core?

Sorry to add to the queue when the culprit is not known, but I had the same issue. I do have ctools installed, but in my experience, it is not related to ctools. Here is how the error occured with me, and how I fixed it.

I installed Libraries, Views 3, Views slideshow, Views slideshow cycle, and I uploaded the jquery cycle files to the libraries folder under sites/all as instructed by views slideshow.

Everything worked great before this, but immediately after when I tried to create a new content type specifically for my slideshow content I received the same error.

I then unchecked 'views slideshow cycle' from the module list, and the problem went away. I reenabled the module, and there was still no error, so for me that fixed it.

In other words, if you can think of any recent modules you installed, try disabling them and reenabling them and see if that works for you.

Just wanted to add some related threads with reports of the same error message in hopes that it helps maintainers figure out where the real problem lies. It seems to be affecting many modules in many contexts when a content or field is deleted:

http://drupal.org/node/1334522
http://drupal.org/node/686938
http://drupal.org/node/1351506
http://drupal.org/node/1332872
http://drupal.org/node/1327038
http://drupal.org/node/1357792

Try patch #13 on this issue. https://drupal.org/node/1351506#comment-7119128

Core issue :/