Index: OpenSceneGraph/trunk/src/osgPlugins/CMakeLists.txt
===================================================================
--- OpenSceneGraph/trunk/src/osgPlugins/CMakeLists.txt (revision 10611)
+++ OpenSceneGraph/trunk/src/osgPlugins/CMakeLists.txt (revision 10763)
@@ -165,5 +165,4 @@
 ADD_SUBDIRECTORY(bvh)
 ADD_SUBDIRECTORY(x)
-ADD_SUBDIRECTORY(ply)
 ADD_SUBDIRECTORY(dxf)
 ADD_SUBDIRECTORY(OpenFlight)
@@ -187,5 +186,4 @@
 ADD_SUBDIRECTORY(tgz)
 
-ADD_SUBDIRECTORY(txp)
 ADD_SUBDIRECTORY(shp)
 ADD_SUBDIRECTORY(txf)
@@ -193,4 +191,9 @@
 ADD_SUBDIRECTORY(bsp)
 ADD_SUBDIRECTORY(mdl)
+
+IF(OSG_CPP_EXCEPTIONS_AVAILABLE)
+    ADD_SUBDIRECTORY(ply)
+    ADD_SUBDIRECTORY(txp)
+ENDIF()
 
 IF(XINE_FOUND)