Hmmn, interesting, I have one of those mice, stopped using with Creo as the scroll can't be used as the middle click, you have to use the other little button behind it and keep shifting from one to the other, (or at least I couldn't find a way to use the wheel to click).
Would be interested to know what settings you applied. I have the supremely ugly Logitech "Perfomance Mouse MX", that I "upgraded" to just to get the middle click back, so perhaps there is a similar setting I could apply to that.
I did try to get the Apple Magic mouse to work with Creo as its the best tracking mouse I've ever used (including the 'dark field' Logitech and what was supposed to be a super responsive Razer Ouroboros gaming mouse) , but just cannot find a fix for getting a middle click on that, scroll works fine, but Creo really needss the click
Thanks
Stephen