rtsp-caching is in live555 plugin

modules/gui/qt4/components/simple_preferences.cpp

@@ -465,7 +465,9 @@ SPrefsPanel::SPrefsPanel( intf_thread_t *_p_intf, QWidget *_parent,
             if (module_exists ("pvr"))
                 TestCaC( "pvr-caching" );
             #endif
-            TestCaCi( "rtsp-caching", 4 ); TestCaCi( "ftp-caching", 2 );
+            if (module_exists ("livedotcom"))
+                TestCaCi( "rtsp-caching", 4 );
+            TestCaCi( "ftp-caching", 2 );
             TestCaCi( "http-caching", 4 );
             if (module_exists ("access_realrtsp"))
                 TestCaCi( "realrtsp-caching", 10 );