If I clear my cache and then view a page with a QT display, I get the following notices.
*I'm using the current git snapshot of QT.
http://awesomescreenshot.com/00cf3bu6e

Plugin qtabs of plugin type quicktabs:contents points to nonexistent file sites/all/modules/quicktabs/plugins/QuickQtabsContent.class.php for class handler handler.
Plugin node of plugin type quicktabs:contents points to nonexistent file sites/all/modules/quicktabs/plugins/QuickNodeContent.class.php for class handler handler.
Plugin view of plugin type quicktabs:contents points to nonexistent file sites/all/modules/quicktabs/plugins/QuickViewContent.class.php for class handler handler.
Plugin block of plugin type quicktabs:contents points to nonexistent file sites/all/modules/quicktabs/plugins/QuickBlockContent.class.php for class handler handler.
Plugin accordion of plugin type quicktabs:renderers points to nonexistent file sites/all/modules/quicktabs/plugins/QuickAccordion.class.php for class handler handler.
Plugin ui_tabs of plugin type quicktabs:renderers points to nonexistent file sites/all/modules/quicktabs/plugins/QuickUitabs.class.php for class handler handler.
Plugin quicktabs of plugin type quicktabs:renderers points to nonexistent file sites/all/modules/quicktabs/plugins/QuickQuicktabs.class.php for class handler handler.
Files: 
CommentFileSizeAuthor
#6 quicktabs-notices-1192538-6.patch422 bytesmikeryan

Comments

Hmm, I checked my own logs on my test install and saw this come up only once - when I ran the update. It has something to do with Ctools making assumptions about how plugins' class files are named but it doesn't otherwise seem to cause any problems. I found a similar issue on another project http://drupal.org/node/1052538.
In your case, are you still continuously getting the notices, every time you load a page with a QT instance? I may need to rename the plugin class files :-(

It only happens after clearing my cache. Then on my first visit to a page with QT displays those notices are thrown. If I visit more pages with QT displays, no additional notices are thrown. It only seems to happen if you have an empty cache.

Hi Katherine
I get it every time I run drush cc
Annoying, but not life-threatening.

Status:Active» Fixed

Ah, I found the problem - I needed to use a slightly different structure in the Quicktabs plugin definitions. Committed a fix:
http://drupalcode.org/project/quicktabs.git/commitdiff/9809429061a6b7857...

Status:Fixed» Closed (fixed)

Automatically closed -- issue fixed for 2 weeks with no activity.

Status:Closed (fixed)» Needs review
StatusFileSize
new422 bytes

Missed one.

Status:Needs review» Fixed

Doh! I think I had been working on the callback content plugin in a separate feature branch when I committed this fix to the main branch originally. Thanks for the patch... committed: http://drupalcode.org/project/quicktabs.git/commit/149cb1d978161ca4d9b61...

Status:Fixed» Closed (fixed)

Automatically closed -- issue fixed for 2 weeks with no activity.