New Austar box. Won't accept IR

Hi, for the last few years I have been using my usb-uirt with my sat box. An Austar box here in Australia. Recently Austar changed their decoder boxes, and now my usbuirt won't operate the box.
I used IRhelper, but it still didn't work. It says it reads ok, and says its on 35.7khz. The pronto code shows up ok too.
I can even get my pronto to learn direct from the satbox remote and it sends ok. But the usb-uirt doesn't.
Any ideas??
Cheers
Jamie
I used IRhelper, but it still didn't work. It says it reads ok, and says its on 35.7khz. The pronto code shows up ok too.
I can even get my pronto to learn direct from the satbox remote and it sends ok. But the usb-uirt doesn't.
Any ideas??
Cheers
Jamie