UI not showing on Surface RT

[dant]

Hi. I'm making a game for the Windows Store using NGUI. The buttons work fine on my PC, Laptop and phone but not on my Surface RT. On the Surface RT they are not visible and I can't figure out why. Any ideas of why this may be? The buttons on the intro scene work fine but in the game scene they are not there.
Thanks.

[ArenMook]

Is your NGUI up to date?

[dant]

It is up to date. Thanks.

[ArenMook]

If nothing shows up then it's generally an issue of using textures that are too large for the target device. For example using a 4096x4096 atlas on most mobile devices. Check the texture sizes you're using.

[dant]

Yep, I think that was the issue. My atlas had grown quite large. Worked fine on Win Phone 8 but I guess Win RT needs it to be smaller.
Thanks for the help!