I've read through as much as I can, but did not find an answer. (I have not used Gatherbuddy in over a year) When I loaded up Gatherbuddy, set up bar 3 with all the correct abilities (1-mount, 3-eat, 4-drink) load my profile then click Start botting, the program does not mount, attempts to mount, runs a little bit, attempts again, runs a little bit (rinse and repeat). I do not think it is recognizing any of the buttons at all.
Sounds like keybinds gone funny. Could check if its even calling any off the action bar buttons. (its a pain thou, make 12 macros all whispering yourself with something different so you know which is being called. Call it abit of fun while you wait for a real answer )