somehow missed this

panda/src/pgraph/config_pgraph.cxx

@@ -86,6 +86,7 @@
 #include "transformState.h"
 #include "transparencyAttrib.h"
 #include "nodePathLerps.h"
+#include "uvScrollNode.h"
 
 #include "dconfig.h"
 
@@ -482,6 +483,7 @@ init_libpgraph() {
   PosHprScaleLerpFunctor::init_type();
   ColorLerpFunctor::init_type();
   ColorScaleLerpFunctor::init_type();
+  UvScrollNode::init_type();
 
   AlphaTestAttrib::register_with_read_factory();
   AntialiasAttrib::register_with_read_factory();
@@ -531,6 +533,7 @@ init_libpgraph() {
   TexGenAttrib::register_with_read_factory();
   TransformState::register_with_read_factory();
   TransparencyAttrib::register_with_read_factory();
+  UvScrollNode::register_with_read_factory();
 
   // By initializing the _states map up front, we also guarantee that
   // the _states_lock mutex gets created before we spawn any threads