It's all good mate, everything helps

.
Unfortunately yes the remove region is selected, as I indicated it works fine when you start TMT3 from the desktop icon but if you do it from within media center which uses the TMT3 plugin then I have the problem.
But your words of wisdom have helped HEAPS! I didn't realise that the region setting would be different in normal TMT3 and the media center plugin, so low and behold, if I go into the plugin it was set to Region A. Maybe this conflicted with the BD-ROM being set to Region B, who knows but it's solved my problem which is the main thing. Thanks mate.
It also means that the discs we get in Oz are UK discs, obviously no specific encoding for Oz (just Region B), I wondered why some of the discs had UK parental guidence logo's on them.
Edited by el-ricardo - 06 Nov 2009 at 6:27pm