It's the ICU and HRS and I get the same with the pz3 in Ratracers Scarey Basement...

Just now tried a P6 pz3 I saved a day or 2 ago which I had tried earlier in P7 and was okay... and now its doing the weird light fantastic..!

When this problem occurs... its like the pz3's load with their lights, but P7 retains its own lights... they remain in scene and on the light ball thing... but have no parameters to adjust... then when you try and alter them at the light ball... kappoooie.....

"You don't have to be mad to use Poser... but it helps"