Wysiwyg (ckeditor) disappeared after drush rr
Go to yourwebsite.com/admin/config/content/ckeditor/editg

In there you probably need to change the path to ckeditor. As you can see from the screen shot the %m stands for /sites/all/modules/ckeditor

so you need to erase %m/ckeditor and instead put /sites/default/modules/ckeditor/ckeditor

Click image to enlarge