Chrome is probably blocking it as a popup, I think.

It's not working for me in Safari.  I just use it to know that I have something in my inbox and go from there.

I would check your settings to make sure, though. It's just a suspicion I have.
Edit: Actually, now that I think about it, I've used it mainly as graph does. Managers, any ideas?

Ah, sorry, I thought it was implied
Browser settings, most definitely. The forum doesn't block popups

It's due to browser pop-up blockers. You need to allow pop ups for this website. That said, I just click OK and go check my inbox manually. I have to do this on Cemetech as well and had to do this on the old Omni board as well, but in Cemetech/The old Omni board it is/was worse because the alert box itself appears in a pop-up

I need to find a mod that opens it in the same window, though.

EDIT: For now the forum PM options are located at profile->Personal Message Options. It's possible to get notified via e-mail if you want, unless you use a fake e-mail address (bad idea if you ever forget your password).

What sucks now is that most sites uses pop-unders or those pop ups that only appear when clicking the page anywhere. Those are not filtered for some reasons. Yet, good pop ups still gets blocked by default. X.x

It's due to browser pop-up blockers. You need to allow pop ups for this website. That said, I just click OK and go check my inbox manually. I have to do this on Cemetech as well and had to do this on the old Omni board as well, but in Cemetech/The old Omni board it is/was worse because the alert box itself appears in a pop-up

I need to find a mod that opens it in the same window, though.

I'll have it checked for Omnimaga only, since I don't want to allow Pop-Ups :S