Hi Spud,
The new version requires you to completely remove any and all previous files related to SIRP. You should now remove ALL scenery related to SIRP and rebuild your scenery library. (also clean out your shader folder). Then install the new SIRP 2.30 version and you should be fixed.
It's good to see you posting. I've missed ya.
Hope you're feeling better.
I've just introduced myself to the SIRP Scenery Configurator Lite, and am going out to check my scenery. I've been on the FSX/P3d setting up to now, but just switched it to P3Dv4. And I turned on "ice runways". But to be honest, it was already damned slippery when I was there before.