diff --git a/C/fli_absmi_insts.h b/C/fli_absmi_insts.h
index 4a08b62ec..b59b41aa0 100644
--- a/C/fli_absmi_insts.h
+++ b/C/fli_absmi_insts.h
@@ -623,6 +623,10 @@
 
       BOp(undef_p, e);
       /* save S for module name */
+      if (LOCAL_DoingUndefp) {
+	PREG=FAILCODE;
+	JMPNext();
+      }
         LOCAL_DoingUndefp = true;
 	saveregs();
       undef_goal(PASS_REGS1);
diff --git a/CXX/yapi.cpp b/CXX/yapi.cpp
index 77103c7fc..c0859d0dd 100644
--- a/CXX/yapi.cpp
+++ b/CXX/yapi.cpp
@@ -977,7 +977,7 @@ PredEntry *YAPPredicate::getPred(Term &t, Term &m, CELL *&out) {
   } else {
     ap = RepPredProp(PredPropByFunc(f, m));
     if (out)
-      memmove(out, RepAppl(t) + 1, ap->ArityOfPE * sizeof(CELL));
+      memmove(out, (const CELL *)RepAppl(t) + 1, ap->ArityOfPE * sizeof(CELL));
     else
       out = RepAppl(t) + 1;
   }
diff --git a/CXX/yapt.hh b/CXX/yapt.hh
index c7086702f..bf8abb188 100644
--- a/CXX/yapt.hh
+++ b/CXX/yapt.hh
@@ -525,8 +525,9 @@ public:
       mk(t);
     }
   }
+  /// type check for unbound
   bool unbound() { return IsUnboundVar(VarOfTerm(gt())); }
-  inline bool isVar() { return true; }       /// type check for unbound
+  inline bool isVar() { return true; }      
   inline bool isAtom() { return false; }     ///  type check for atom
   inline bool isInteger() { return false; }  /// type check for integer
   inline bool isFloat() { return false; }    /// type check for floating-point
diff --git a/library/lists.yap b/library/lists.yap
index f6f927a7f..e1c85f902 100644
--- a/library/lists.yap
+++ b/library/lists.yap
@@ -57,7 +57,7 @@
     with the `use_module(library(lists))` command.
 */
 
-:- include(pl/bootlists).
+%:- include(pl/bootlists).
 
 /** @pred list_concat(+ _Lists_,? _List_)
 
diff --git a/packages/ProbLog/problog_lbfgs.yap b/packages/ProbLog/problog_lbfgs.yap
index 8dbdc5bb8..4a0ae9057 100644
--- a/packages/ProbLog/problog_lbfgs.yap
+++ b/packages/ProbLog/problog_lbfgs.yap
@@ -703,7 +703,7 @@ ground_truth_difference :-
 %= -Float
 %========================================================================
 
-mse_trainingset_only_for_linesearch(MSE) :-
+mse_trainingset_only_for_linesearch(MSE, FX) :-
 	update_values,
 
 	example_count(Example_Count),
@@ -712,21 +712,8 @@ mse_trainingset_only_for_linesearch(MSE) :-
 	forall(user:example(QueryID,_Query,QueryProb,Type),
 	       (
 		once(update_query(QueryID,'.',probability)),
-		query_probability(QueryID,CurrentProb),
 		once(update_query_cleanup(QueryID)),
-		(
-		 (Type == '='; (Type == '<', CurrentProb>QueryProb); (Type=='>',CurrentProb<QueryProb))
-		->
-		 (
-		  bb_get(error_train_line_search,Old_Error),
-		  New_Error is Old_Error + (CurrentProb-QueryProb)**2,
-		  bb_put(error_train_line_search,New_Error)
-		 );true
-		)
-	       )
-	      ),
-	bb_delete(error_train_line_search,Error),
-	MSE is Error/Example_Count,
+	       ),
 	format_learning(3,' (~8f)~n',[MSE]),
 	retractall(values_correct).
 
@@ -842,7 +829,7 @@ set_tunable(I,Slope,P) :-
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 % start calculate gradient
-	%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 user:evaluate(LLH_Training_Queries, X,Grad,N,_,_) :-
     %Handle = user_error,
     example_count(TrainingExampleCount),
@@ -984,7 +971,7 @@ user:progress(FX,X,_G,X_Norm,G_Norm,Step,_N,Iteration,Ls,0) :-
     NextIteration is CurrentIteration+1,
     assertz(current_iteration(NextIteration)),
     save_model,
-    set_problog_flag(mse_trainset, FX),
+    set_problog_flag(mse_trainingset, FX),
     X0 <== X[0], sigmoid(X0,Slope,P0),
     X1 <== X[1], sigmoid(X1,Slope,P1),
     format('~d. Iteration : (x0,x1)=(~4f,~4f)  f(X)=~4f  |X|=~4f  |X\'|=~4f  Step=~4f  Ls=~4f~n',[Iteration,P0                                               ,P1,FX,X_Norm,G_Norm,Step,Ls]).
diff --git a/packages/jpl/src/c/jpl.c b/packages/jpl/src/c/jpl.c
index d7e0c6c21..dcf432df5 100755
--- a/packages/jpl/src/c/jpl.c
+++ b/packages/jpl/src/c/jpl.c
@@ -640,7 +640,7 @@ static JNIEnv*
 jni_env(void) /* economically gets a JNIEnv pointer, valid for this thread */
 { JNIEnv	*env;
 
-  switch( (*jvm)->GetEnv(jvm, (void**)&env, JNI_VERSION_1_8) )
+  switch( (*jvm)->GetEnv(jvm, (void**)&env, JNI_VERSION_1_4) )
   { case JNI_OK:
       return env;
     case JNI_EDETACHED:
@@ -5675,7 +5675,7 @@ static foreign_t
 	int			i;
 	term_t		head;
 	term_t		list;
-	char		*s;
+	char		*s = NULL;
 
 	if ( jvm_dia == NULL )  /* presumably, JVM is already started, so default options cannot now be set */
 		{
diff --git a/pl/listing.yap b/pl/listing.yap
index dec2fe9e1..a6ca3227a 100644
--- a/pl/listing.yap
+++ b/pl/listing.yap
@@ -166,7 +166,7 @@ listing(Stream, [MV|MVs]) :- !,
     ->
       format( Stream, ':- dynamic ~q/~d.~n', [N,Ar])
     ;
-\      format( Stream, ':- dynamic ~q:~q/~d.~n', [M,N,Ar])
+      format( Stream, ':- dynamic ~q:~q/~d.~n', [M,N,Ar])
      ),
      fail.
 '$list_clauses'(Stream, M, Pred) :-
diff --git a/pl/protect.yap b/pl/protect.yap
index d7e489c09..07ca65fd6 100755
--- a/pl/protect.yap
+++ b/pl/protect.yap
@@ -49,6 +49,7 @@ prolog:'$protect' :-
     sub_atom(Name,0,1,_, '$'),
     functor(P,Name,Arity),
 %    '$hide_predicate'(P,M),
+    '$stash_predicate'(P,M),
     fail.
 prolog:'$protect' :-
     current_atom(Name),