Question Custom Message Alerts Not Working

I can't get the custom message alerts to work. I know how to set them under the contacts setting, but it's not working. The custom LED color is, but not the notification sound. Does it have to be one of the stock notifications or something?
TMOUS HD2 on ATT:
WinMo: Stock ROM
Android: NexusHD2-FRG83 v1.5 w/Hastarin v7.5Alt
HyperDroidV1.7★CM6★michyprima's R11+AXI