WT G3X Mod & Kingair SVT

I am using all 3 of the Working Title (G1000, G3000 and G3X) mods and am not able to turn on the synthetic vision in the Kingair 350I.  I can select it to on if I click on the PFD and bring up the menu page, but the synthetic vision does not turn on, just the brown and blue horizon.  Any ideas?

Thanks.