Gmail Mobile (Java) app and WM6.5.3

[who?]

I'm running a 23518 build (NRG), and installed Gmail's Java WinMo app. But when I try to launch Gmail I get the following alert: "Gmail wants to access RMS data. Continue?" I click Yes, but nothing happens. The program isn't frozen, I can click the Yes button again and again and it changes color as though it's being selected, but the app doesn't continue?

Any insight? Thanks.