Macro/Keybind Help

I have the following healing macro for mouse-over or when my mouse isnt over any character:

#showtooltip
/use [@mouseover,help,nodead][help,nodead][@player] Flash of Light

The Macro works fine on almost all my keybinds.

I have two keybinds for my VERY simple mouse 4 and 5 buttons on the side of my mouse.

The keybinds work fine for most any attack abilities that I have bound to them (ie; Judgement, Crusader Strike, etc).

When I put the above macro in the keybinds for the mouse though, they stop functioning. The same is true for my Blessing of Protection and Cleanse Toxin macro’s.

I only have a few minor addons running: Details, DBM and Simulationcraft. All of which I have tried to disable to get this working. These macro’s have worked in the past on this keybind intermittently. What is going on?

Unit frames eat mouse clicks. You’ll need the addon Clique if you want to use mouse keys for spells.