After install the signup and creating some new nodes and taxonomy this error turned out.

Fatal error: Call to undefined function xdebug_break()…/cck_signup/notifications_cck_signup/notifications_cck_signup.module on line 201

When I try this fix: https://www.drupal.org/node/1077442 things get worse, then I could not resave some nodes who lost connection to matematic field list, so I went back. after that it seams to work with resave nodes againe and lost connection to fields is gone.

I have tried with uninstall + uninstall modules and then install module again with the same error-result.

All modules are updated to the latest version.

Please advice, cant find any solution of this subject who will work

thxs ahead / Göran