diff --git a/InstallerSamples/Graph3D/Группировка/Child.pas b/InstallerSamples/Graph3D/Группировка/Child.pas
new file mode 100644
index 000000000..5abf90bdb
--- /dev/null
+++ b/InstallerSamples/Graph3D/Группировка/Child.pas
@@ -0,0 +1,7 @@
+uses Graph3D;
+
+begin
+  var s := Sphere(0,1,2,2,Colors.Orchid);
+  s.AddChild(Sphere(0,2,1,0.5,Colors.White));
+  s.Rotate(OrtZ,90);
+end.
\ No newline at end of file
diff --git a/InstallerSamples/Graph3D/Материалы/Material2.pas b/InstallerSamples/Graph3D/Материалы/Material2.pas
new file mode 100644
index 000000000..09b72c666
--- /dev/null
+++ b/InstallerSamples/Graph3D/Материалы/Material2.pas
@@ -0,0 +1,17 @@
+uses Graph3D;
+
+begin
+  for var i:=0 to 6 do
+    Sphere(6-2*i,-3,0,1,
+      Materials.Diffuse(Colors.Green) + 
+      Materials.Specular(255-32*i,100));
+  for var i:=0 to 6 do
+    Sphere(6-2*i,0,0,1,
+      Materials.Diffuse(Colors.Green) +
+      Materials.Specular(255,100-15*i));
+  for var i:=0 to 6 do
+    Sphere(6-2*i,3,0,1,
+      Materials.Diffuse(Colors.Green) + 
+      Materials.Specular(128,100) + 
+      Materials.Emissive(GrayColor(15*i)));
+end.
\ No newline at end of file
diff --git a/Parsers/PascalABCParserNewSaushkin/ABCPascal.cs b/Parsers/PascalABCParserNewSaushkin/ABCPascal.cs
index e6ef2269e..86b58e079 100644
--- a/Parsers/PascalABCParserNewSaushkin/ABCPascal.cs
+++ b/Parsers/PascalABCParserNewSaushkin/ABCPascal.cs
@@ -1,9 +1,9 @@
 //
 //  This CSharp output file generated by Gardens Point LEX
 //  Version:  1.1.3.301
-//  Machine:  DESKTOP-7B4K9VB
-//  DateTime: 04.06.2018 17:39:57
-//  UserName: Bogdan
+//  Machine:  DESKTOP-A6LT9RI
+//  DateTime: 12.06.2018 21:27:13
+//  UserName: ?????????
 //  GPLEX input file <ABCPascal.lex>
 //  GPLEX frame file <embedded resource>
 //
diff --git a/Parsers/PascalABCParserNewSaushkin/ABCPascal.y b/Parsers/PascalABCParserNewSaushkin/ABCPascal.y
index f83d015ff..de0815a4c 100644
--- a/Parsers/PascalABCParserNewSaushkin/ABCPascal.y
+++ b/Parsers/PascalABCParserNewSaushkin/ABCPascal.y
@@ -2950,6 +2950,8 @@ typeof_expr
 question_expr
     : expr_l1 tkQuestion expr_l1 tkColon expr_l1 
         { 
+            if ($3 is nil_const && $5 is nil_const)
+            	parsertools.AddErrorFromResource("TWO_NILS_IN_QUESTION_EXPR",@3);
 			$$ = new question_colon_expression($1, $3, $5, @$);  
 		}
     ;
diff --git a/Parsers/PascalABCParserNewSaushkin/ABCPascalYacc.cs b/Parsers/PascalABCParserNewSaushkin/ABCPascalYacc.cs
index 40aba8e2f..633e797ba 100644
--- a/Parsers/PascalABCParserNewSaushkin/ABCPascalYacc.cs
+++ b/Parsers/PascalABCParserNewSaushkin/ABCPascalYacc.cs
@@ -1,9 +1,9 @@
 // (see accompanying GPPGcopyright.rtf)
 
 // GPPG version 1.3.6
-// Machine:  DESKTOP-7B4K9VB
-// DateTime: 04.06.2018 17:39:58
-// UserName: Bogdan
+// Machine:  DESKTOP-A6LT9RI
+// DateTime: 12.06.2018 21:27:14
+// UserName: ?????????
 // Input file <ABCPascal.y>
 
 // options: no-lines gplex
@@ -5146,6 +5146,8 @@ public partial class GPPGParser: ShiftReduceParser<PascalABCSavParser.Union, Lex
         break;
       case 582: // question_expr -> expr_l1, tkQuestion, expr_l1, tkColon, expr_l1
 { 
+            if (ValueStack[ValueStack.Depth-3].ex is nil_const && ValueStack[ValueStack.Depth-1].ex is nil_const)
+            	parsertools.AddErrorFromResource("TWO_NILS_IN_QUESTION_EXPR",LocationStack[LocationStack.Depth-3]);
 			CurrentSemanticValue.ex = new question_colon_expression(ValueStack[ValueStack.Depth-5].ex, ValueStack[ValueStack.Depth-3].ex, ValueStack[ValueStack.Depth-1].ex, CurrentLocationSpan);  
 		}
         break;
diff --git a/Parsers/PascalABCParserNewSaushkin/PABC.ymc b/Parsers/PascalABCParserNewSaushkin/PABC.ymc
index 868a60ccc..c18af62cb 100644
--- a/Parsers/PascalABCParserNewSaushkin/PABC.ymc
+++ b/Parsers/PascalABCParserNewSaushkin/PABC.ymc
@@ -189,6 +189,9 @@ script=
 
 
 
+
+
+
 
 
 
diff --git a/bin/Lng/Eng/PascalABCParser.dat b/bin/Lng/Eng/PascalABCParser.dat
index 2cac9acc4..15e935157 100644
--- a/bin/Lng/Eng/PascalABCParser.dat
+++ b/bin/Lng/Eng/PascalABCParser.dat
@@ -62,3 +62,4 @@ OVERLOAD_IS_NOT_USED=overload is not used in PascalABC.NET
 ONLY_BASE_ASSIGNMENT_FOR_TUPLE=Tuple allows only base assignment :=
 BAD_FORMAT_STRING=Interpolated string has invalid format
 TUPLE_ELEMENTS_COUNT_MUST_BE_LESSEQUAL_7=Count of Tuple elements must be <=7
+TWO_NILS_IN_QUESTION_EXPR=The conditional expression cannot contain nil constants on both branches
\ No newline at end of file
diff --git a/bin/Lng/Rus/PascalABCParser.dat b/bin/Lng/Rus/PascalABCParser.dat
index 844a9d773..fc3335e01 100644
--- a/bin/Lng/Rus/PascalABCParser.dat
+++ b/bin/Lng/Rus/PascalABCParser.dat
@@ -61,3 +61,4 @@ OVERLOAD_IS_NOT_USED=overload не используется в PascalABC.NET
 ONLY_BASE_ASSIGNMENT_FOR_TUPLE=Для кортежа допустимо только обычное присваивание :=
 BAD_FORMAT_STRING=Встречена неправильная форматная строка
 TUPLE_ELEMENTS_COUNT_MUST_BE_LESSEQUAL_7=Количество элементов кортежа не должно быть больше 7 
+TWO_NILS_IN_QUESTION_EXPR=Условное выражение не может содержать константы nil по обеим веткам
\ No newline at end of file