[Bugs] 5th mouse button can't get assigned

I have a microsoft intellimouse optical USB. It has 5 buttons and the 5th won't get assigned in game, when I try it shows up as 'f15'.

It still works though. Mine shows up the same way, but the button does what I want so I won't complain.

You probably have software for the mouse that is set to interpret the 5th mouse button as F15. Check your mouse settings please and let me know. Cheers.

i have a 5-button MS mouse... my version of their software lets you set all the different buttons to different functions for each program, and it works perfectly.

I have 7 buttons on my mouse and everyone works.

errr no 8 I'm sorry