Hello @Chibicops and welcome to the forum 
This particular crashing situation has been seen before.
Try using Mouse Button: Z+left-button instead of Keyboard Combination: Z.
This bug has been fixed in the Plus and Next versions but you still need to use key+left-button for Zoom/Rotate to work.
The principle behind all that is explained in more detail in this reply to another topic:
Consistent Crash When Changing Hotkeys - #5 by AhabGreybeard