Don't export plOmniSqApplicator to PotS or ABM

This is unimplemented and causes the game to crash when dereferencing a
null controller.

korman/exporter/animation.py

@@ -188,6 +188,7 @@ class AnimationConverter:
                 applicator.channel = channel
                 yield applicator
         elif falloff == "INVERSE_SQUARE":
+            if self._mgr.getVer() >= pvMoul:
                 def convert_quadratic_atten(distance, energy):
                     intens = abs(energy[0])
                     atten_end = distance[0] if lamp.use_sphere else distance[0] * 2
@@ -202,6 +203,8 @@ class AnimationConverter:
                     applicator.channelName = name
                     applicator.channel = channel
                     yield applicator
+            else:
+                self._exporter().report.port("Lamp Falloff '{}' animations only partially supported for this version of Plasma", falloff, indent=3)
         else:
             self._exporter().report.warn("Lamp Falloff '{}' animations are not supported".format(falloff), ident=3)