Mouse 4/5 binds not working?

[presbtw]

I can't seem to get the mouse 4/5 binds working in the binding option (mouse x1/x2?)

Does anyone know how to fix this or if I'm just stupid?

I'd also rather not have to just rebind mouse4 to a different key with software.

[Vincent Burel]

yes, there is maybe a problem with X1 X2 button ... this is something we have not tested yet by our own... i note it.

[presbtw]

Thanks, I'd really appreciate it if you could get that fixed. It would make things a lot easier for me (and I'm sure a lot of other people).