Hi marktimemedia,
There is indeed a bug and we’ve just fixed it though that fix probably won’t be rolled out until the next maintenance release is ready – the best thing to do in the meantime in your live/production site is turn off the display of errors.
I know you’ve tried to do that by setting WP_DEBUG to false so if that doesn’t help you could also try changing the display_errors property in your php.ini file (please ask your host if you are unsure, however – some will let you override this and others will prefer changes are added to .htaccess or there may be some other specific way to do this).
Do you feel confident in terms of editing code? Though we normally would not recommend editing core plugin code in this case the fix will be included in the next update in any case so as long as you take normal precautions (back up your site, and particularly the file you edit first of all!) you should be good:
* Open up wootickets/classes/class-wootickets.php
* Go to line 100
* Find the piece of text reading ‘handle_delete_product’
* Change the word product to post
* It should now read ‘handle_delete_post’