#pragma link C++ class AliGenExtFileCH;
#pragma link C++ class AliGenScan;
#pragma link C++ class AliGenDoubleScan;
-#pragma link C++ class AliPythia-;
+#pragma link C++ class AliPythia;
#pragma link C++ class AliGenLib;
#pragma link C++ class AliGenMUONlib;
#pragma link C++ class AliGenFLUKAsource;