diff --git a/Configuration/GlobalAssemblyInfo.cs b/Configuration/GlobalAssemblyInfo.cs
index 2988f5ba8..c53df5830 100644
--- a/Configuration/GlobalAssemblyInfo.cs
+++ b/Configuration/GlobalAssemblyInfo.cs
@@ -15,7 +15,7 @@ internal static class RevisionClass
 	public const string Major = "3";
 	public const string Minor = "7";
 	public const string Build = "1";
-	public const string Revision = "2767";
+	public const string Revision = "2768";
 
         public const string MainVersion = Major + "." + Minor;
 	public const string FullVersion = Major + "." + Minor + "." + Build + "." + Revision;
diff --git a/Configuration/Version.defs b/Configuration/Version.defs
index 961119af3..094db1fd7 100644
--- a/Configuration/Version.defs
+++ b/Configuration/Version.defs
@@ -1,4 +1,4 @@
-%MINOR%=7
-%REVISION%=2767
 %COREVERSION%=1
+%REVISION%=2768
+%MINOR%=7
 %MAJOR%=3
diff --git a/Release/pabcversion.txt b/Release/pabcversion.txt
index 6b829ae12..a41468fb6 100644
--- a/Release/pabcversion.txt
+++ b/Release/pabcversion.txt
@@ -1 +1 @@
-3.7.1.2767
+3.7.1.2768
diff --git a/ReleaseGenerators/PascalABCNET_version.nsh b/ReleaseGenerators/PascalABCNET_version.nsh
index 0d87d0037..6d7860ec2 100644
--- a/ReleaseGenerators/PascalABCNET_version.nsh
+++ b/ReleaseGenerators/PascalABCNET_version.nsh
@@ -1 +1 @@
-!define VERSION '3.7.1.2767'
+!define VERSION '3.7.1.2768'
diff --git a/TestSuite/2363.pas b/TestSuite/2363.pas
new file mode 100644
index 000000000..d1dbd02ad
--- /dev/null
+++ b/TestSuite/2363.pas
@@ -0,0 +1,14 @@
+procedure p0<T>(o: T);
+begin
+  //Print(1);
+end;
+
+procedure p1<T>; where T: record;
+begin
+  //Ошибка: Возможны два преобразования типов
+  p0&<T?>(nil);
+end;
+
+begin 
+  Assert(1=1)
+end.
\ No newline at end of file
diff --git a/TestSuite/CompilationSamples/School.pas b/TestSuite/CompilationSamples/School.pas
index 081bdaba4..e563ab2f7 100644
--- a/TestSuite/CompilationSamples/School.pas
+++ b/TestSuite/CompilationSamples/School.pas
@@ -41,6 +41,9 @@ function MinMax(s: sequence of integer): (integer, integer);
 /// Возвращает кортеж из минимума и максимума последовательности s
 function MinMax(s: sequence of real): (real, real);
 
+/// Возвращает кортеж из минимума и максимума последовательности s
+function MinMax(s: sequence of BigInteger): (BigInteger, BigInteger);
+
 /// Возвращает НОД
 function НОД(a, b: int64): int64;
 
@@ -316,6 +319,24 @@ begin
   Result := (min, max)
 end;
 
+/// Возвращает кортеж из минимума и максимума последовательности s
+function MinMax(s: sequence of BigInteger): (BigInteger, BigInteger);
+begin
+  var min, max: BigInteger;
+  var FirstValue := True;
+  foreach var m in s do
+    if FirstValue then
+      (min, max, FirstValue) := (m, m, False)
+    else
+    begin  
+      if m < min then
+        min := m;
+      if m > max then
+        max := m
+    end;  
+  Result := (min, max)
+end;
+
 /// Возвращает кортеж из минимума и максимума последовательности
 function MinMax(Self: sequence of int64): (int64, int64); extensionmethod :=
 MinMax(Self);
@@ -329,6 +350,10 @@ MinMax(Self);
 function MinMax(Self: sequence of real): (real, real); extensionmethod :=
 MinMax(Self);
 
+/// Возвращает кортеж из минимума и максимума последовательности
+function MinMax(Self: sequence of BigInteger): (BigInteger, BigInteger);
+extensionmethod := MinMax(Self);
+
 {$endregion}
 
 {$region GCDLCM}
diff --git a/TreeConverter/TreeConversion/convertion_data_and_alghoritms.cs b/TreeConverter/TreeConversion/convertion_data_and_alghoritms.cs
index 02bbbf85f..d667f86b6 100644
--- a/TreeConverter/TreeConversion/convertion_data_and_alghoritms.cs
+++ b/TreeConverter/TreeConversion/convertion_data_and_alghoritms.cs
@@ -1667,6 +1667,8 @@ namespace PascalABCCompiler.TreeConverter
 			{
 				if (ptc.second!=null)
 				{
+                    if (ptc.first.from is null_type_node || ptc.second.from is null_type_node)
+                        continue; // SSM 9/12/20 fix 2363
 					AddError(new PossibleTwoTypeConversionsInFunctionCall(loc,ptc.first,ptc.second));
 				}
 				
diff --git a/bin/Lib/School.pas b/bin/Lib/School.pas
index 081bdaba4..e563ab2f7 100644
--- a/bin/Lib/School.pas
+++ b/bin/Lib/School.pas
@@ -41,6 +41,9 @@ function MinMax(s: sequence of integer): (integer, integer);
 /// Возвращает кортеж из минимума и максимума последовательности s
 function MinMax(s: sequence of real): (real, real);
 
+/// Возвращает кортеж из минимума и максимума последовательности s
+function MinMax(s: sequence of BigInteger): (BigInteger, BigInteger);
+
 /// Возвращает НОД
 function НОД(a, b: int64): int64;
 
@@ -316,6 +319,24 @@ begin
   Result := (min, max)
 end;
 
+/// Возвращает кортеж из минимума и максимума последовательности s
+function MinMax(s: sequence of BigInteger): (BigInteger, BigInteger);
+begin
+  var min, max: BigInteger;
+  var FirstValue := True;
+  foreach var m in s do
+    if FirstValue then
+      (min, max, FirstValue) := (m, m, False)
+    else
+    begin  
+      if m < min then
+        min := m;
+      if m > max then
+        max := m
+    end;  
+  Result := (min, max)
+end;
+
 /// Возвращает кортеж из минимума и максимума последовательности
 function MinMax(Self: sequence of int64): (int64, int64); extensionmethod :=
 MinMax(Self);
@@ -329,6 +350,10 @@ MinMax(Self);
 function MinMax(Self: sequence of real): (real, real); extensionmethod :=
 MinMax(Self);
 
+/// Возвращает кортеж из минимума и максимума последовательности
+function MinMax(Self: sequence of BigInteger): (BigInteger, BigInteger);
+extensionmethod := MinMax(Self);
+
 {$endregion}
 
 {$region GCDLCM}