wont recognize mouse button 5

hey, so i went on vacation for about 2 weeks. i get back and log on and i have to dl some gw updates. everything is fine. then i go into play and i find out my mouse 4 and 5 buttons dont work. i have a razer copperhead and 4 is the lower button my my thumb and 5 is the one above it. i have 4 set as target closest, and i have 5 set as attack. and they dont work at all now. i cleared my controls config and then when it says type in new button or something like that and i click my mouse button 4, nothing happens. and it used to work. does anyone have this problem? nothing has changed with my mouse and computer or anything. is there something i can do to fix this?

Same problem here with a logitech mx518 since last update. Can't seem to put the mouse 4 and mouse 5 on any shortcut.

That's probably because you can't map mouse buttons in GW.

Have you tried the other 3?

If you can't remap other 3 buttons, probably you'll have to check the mouse properties and set those 2 extra buttons to fake keys, like Esc o Enter

It worked for 2 years. Why should it stop working now? And no my mouse isn't broken, I've tried on other games.