diff --git a/applications/json_packager/jsonpackage.lpi b/applications/json_packager/jsonpackage.lpi
index bbb064b87..e69b4680e 100644
--- a/applications/json_packager/jsonpackage.lpi
+++ b/applications/json_packager/jsonpackage.lpi
@@ -24,7 +24,7 @@
       <UseVersionInfo Value="True"/>
       <AutoIncrementBuild Value="True"/>
       <MinorVersionNr Value="1"/>
-      <RevisionNr Value="9"/>
+      <RevisionNr Value="10"/>
       <StringTable Comments="Buld configured for Win Linux and Darwin" FileDescription="An editor for OnlinePackageManager update JSON files" InternalName="jsoneditor" LegalCopyright="(c)2016 usernames lainz and minesadorada @ forum.lazarus.freepascal.org" LegalTrademarks="GPL code" OriginalFilename="jsoneditor" ProductName="Lazarus and Freepascal" ProductVersion="1.x and 3.x"/>
     </VersionInfo>
     <BuildModes Count="5">
diff --git a/applications/json_packager/jsonpackage.lps b/applications/json_packager/jsonpackage.lps
index 06a10f39b..04a00886e 100644
--- a/applications/json_packager/jsonpackage.lps
+++ b/applications/json_packager/jsonpackage.lps
@@ -20,11 +20,12 @@
         <HasResources Value="True"/>
         <ResourceBaseClass Value="Form"/>
         <IsVisibleTab Value="True"/>
-        <TopLine Value="790"/>
-        <CursorPos X="23" Y="811"/>
+        <TopLine Value="13"/>
+        <CursorPos X="62" Y="28"/>
         <UsageCount Value="56"/>
-        <Bookmarks Count="1">
-          <Item0 Y="465" ID="1"/>
+        <Bookmarks Count="2">
+          <Item0 Y="468" ID="1"/>
+          <Item1 X="8" Y="737"/>
         </Bookmarks>
         <Loaded Value="True"/>
         <LoadedDesigner Value="True"/>
@@ -103,9 +104,6 @@
         <TopLine Value="10428"/>
         <CursorPos X="29" Y="10452"/>
         <UsageCount Value="11"/>
-        <Bookmarks Count="1">
-          <Item0 X="86" Y="1718"/>
-        </Bookmarks>
         <Loaded Value="True"/>
       </Unit11>
       <Unit12>
@@ -119,124 +117,124 @@
     </Units>
     <JumpHistory Count="30" HistoryIndex="29">
       <Position1>
-        <Filename Value="umain.pas"/>
-        <Caret Line="748" Column="47" TopLine="747"/>
+        <Filename Value="C:\NewPascalDarwin\lazarus\lcl\grids.pas"/>
+        <Caret Line="1395" Column="21" TopLine="1371"/>
       </Position1>
       <Position2>
         <Filename Value="C:\NewPascalDarwin\lazarus\lcl\grids.pas"/>
-        <Caret Line="456" Column="14" TopLine="456"/>
+        <Caret Line="745" Column="27" TopLine="709"/>
       </Position2>
       <Position3>
         <Filename Value="C:\NewPascalDarwin\lazarus\lcl\grids.pas"/>
-        <Caret Line="1721" Column="21" TopLine="1694"/>
+        <Caret Line="114" Column="3" TopLine="76"/>
       </Position3>
       <Position4>
-        <Filename Value="C:\NewPascalDarwin\lazarus\lcl\grids.pas"/>
-        <Caret Line="1395" Column="21" TopLine="1371"/>
+        <Filename Value="umain.pas"/>
+        <Caret Line="155" TopLine="134"/>
       </Position4>
       <Position5>
-        <Filename Value="C:\NewPascalDarwin\lazarus\lcl\grids.pas"/>
-        <Caret Line="745" Column="27" TopLine="709"/>
+        <Filename Value="umain.pas"/>
+        <Caret Line="308" Column="3" TopLine="306"/>
       </Position5>
       <Position6>
-        <Filename Value="C:\NewPascalDarwin\lazarus\lcl\grids.pas"/>
-        <Caret Line="114" Column="3" TopLine="76"/>
+        <Filename Value="umain.pas"/>
+        <Caret Line="796" Column="19" TopLine="766"/>
       </Position6>
       <Position7>
         <Filename Value="umain.pas"/>
-        <Caret Line="155" TopLine="134"/>
+        <Caret Line="46" Column="40" TopLine="31"/>
       </Position7>
       <Position8>
-        <Filename Value="umain.pas"/>
-        <Caret Line="308" Column="3" TopLine="306"/>
+        <Filename Value="C:\NewPascalDarwin\fpc\rtl\objpas\classes\classesh.inc"/>
+        <Caret Line="498" Column="37" TopLine="465"/>
       </Position8>
       <Position9>
         <Filename Value="umain.pas"/>
-        <Caret Line="796" Column="19" TopLine="766"/>
+        <Caret Line="450" Column="47" TopLine="426"/>
       </Position9>
       <Position10>
         <Filename Value="umain.pas"/>
-        <Caret Line="46" Column="40" TopLine="31"/>
+        <Caret Line="298" Column="27" TopLine="285"/>
       </Position10>
       <Position11>
-        <Filename Value="C:\NewPascalDarwin\fpc\rtl\objpas\classes\classesh.inc"/>
-        <Caret Line="498" Column="37" TopLine="465"/>
+        <Filename Value="umain.pas"/>
+        <Caret Line="313" Column="46" TopLine="290"/>
       </Position11>
       <Position12>
         <Filename Value="umain.pas"/>
-        <Caret Line="450" Column="47" TopLine="426"/>
+        <Caret Line="316" Column="65" TopLine="293"/>
       </Position12>
       <Position13>
         <Filename Value="umain.pas"/>
-        <Caret Line="298" Column="27" TopLine="285"/>
+        <Caret Line="313" Column="46" TopLine="289"/>
       </Position13>
       <Position14>
         <Filename Value="umain.pas"/>
-        <Caret Line="313" Column="46" TopLine="290"/>
+        <Caret Line="320" TopLine="296"/>
       </Position14>
       <Position15>
         <Filename Value="umain.pas"/>
-        <Caret Line="316" Column="65" TopLine="293"/>
+        <Caret Line="310" Column="29" TopLine="295"/>
       </Position15>
       <Position16>
         <Filename Value="umain.pas"/>
-        <Caret Line="313" Column="46" TopLine="289"/>
+        <Caret Line="672" Column="56" TopLine="635"/>
       </Position16>
       <Position17>
         <Filename Value="umain.pas"/>
-        <Caret Line="320" TopLine="296"/>
+        <Caret Line="810" Column="41" TopLine="787"/>
       </Position17>
       <Position18>
         <Filename Value="umain.pas"/>
-        <Caret Line="310" Column="29" TopLine="295"/>
+        <Caret Line="812" Column="36" TopLine="786"/>
       </Position18>
       <Position19>
         <Filename Value="umain.pas"/>
-        <Caret Line="672" Column="56" TopLine="635"/>
+        <Caret Line="813" Column="5" TopLine="790"/>
       </Position19>
       <Position20>
         <Filename Value="umain.pas"/>
-        <Caret Line="810" Column="41" TopLine="787"/>
+        <Caret Line="811" TopLine="787"/>
       </Position20>
       <Position21>
         <Filename Value="umain.pas"/>
-        <Caret Line="812" Column="36" TopLine="786"/>
+        <Caret Line="814" Column="5" TopLine="787"/>
       </Position21>
       <Position22>
         <Filename Value="umain.pas"/>
-        <Caret Line="813" Column="5" TopLine="790"/>
+        <Caret Line="812" Column="24" TopLine="784"/>
       </Position22>
       <Position23>
         <Filename Value="umain.pas"/>
-        <Caret Line="811" TopLine="787"/>
+        <Caret Line="811" Column="11" TopLine="788"/>
       </Position23>
       <Position24>
         <Filename Value="umain.pas"/>
-        <Caret Line="814" Column="5" TopLine="787"/>
+        <Caret Line="813" Column="6" TopLine="789"/>
       </Position24>
       <Position25>
         <Filename Value="umain.pas"/>
-        <Caret Line="812" Column="24" TopLine="784"/>
+        <Caret Line="489" TopLine="481"/>
       </Position25>
       <Position26>
         <Filename Value="umain.pas"/>
-        <Caret Line="811" Column="11" TopLine="788"/>
+        <Caret Line="819" TopLine="789"/>
       </Position26>
       <Position27>
         <Filename Value="umain.pas"/>
-        <Caret Line="813" Column="6" TopLine="789"/>
+        <Caret Line="813" TopLine="789"/>
       </Position27>
       <Position28>
         <Filename Value="umain.pas"/>
-        <Caret Line="489" TopLine="481"/>
+        <Caret Line="79" Column="26" TopLine="50"/>
       </Position28>
       <Position29>
         <Filename Value="umain.pas"/>
-        <Caret Line="819" TopLine="789"/>
+        <Caret Line="812" TopLine="795"/>
       </Position29>
       <Position30>
         <Filename Value="umain.pas"/>
-        <Caret Line="813" TopLine="789"/>
+        <Caret Line="735" Column="33" TopLine="720"/>
       </Position30>
     </JumpHistory>
   </ProjectSession>
diff --git a/applications/json_packager/jsonpackage.res b/applications/json_packager/jsonpackage.res
index 2b1e7549a..44d6b95fb 100644
Binary files a/applications/json_packager/jsonpackage.res and b/applications/json_packager/jsonpackage.res differ
diff --git a/applications/json_packager/umain.pas b/applications/json_packager/umain.pas
index b7d39e816..24930c99d 100644
--- a/applications/json_packager/umain.pas
+++ b/applications/json_packager/umain.pas
@@ -22,9 +22,11 @@ unit umain;
   Version History
   ===============
   0.0.0.0 Original code by lainz
-  ..to 0.1.6.0 Refactored and updated by minesadorada
-  0.1.7.0: Bugfix by lainz
-  0.1.8.0: Config file change by minesadorada
+  ..to 0.1.6.0 Refactored and updated (minesadorada)
+  0.1.7.0: Bugfix (lainz)
+  0.1.8.0: Config file change (minesadorada)
+  0.1.10.0: Exception handling for Load + Save (minesadorada)
+            Error check for duplicate lpk entries (minesadorada)
  }
 {$mode objfpc}{$H+}
 
@@ -76,7 +78,7 @@ type
   public
     constructor Create;
     destructor Destroy; override;
-    procedure LoadFromFile(AFileName: string);
+    function LoadFromFile(AFileName: string):Boolean;
     function SaveToFile(AFileName: string): boolean;
   published
     property Package: TPackageData read FPackage write FPackage;
@@ -461,20 +463,26 @@ begin
     sJSONFilePath := FileOpen1.Dialog.Filename;
     CFG.WriteString('Options', 'LastLoadedJSONPath', ExtractFileDir(sJSONFilePath));
     JSONPackage := TPackage.Create;
-    JSONPackage.LoadFromFile(FileOpen1.Dialog.FileName);
+    TRY
+     if JSONPackage.LoadFromFile(FileOpen1.Dialog.FileName) then
+     begin
+      editName.Text := JSONPackage.Package.Name;
+      editDownloadURL.Text := JSONPackage.Package.DownloadURL;
+      cbForceUpdate.Checked := JSONPackage.Package.ForceUpdate;
 
-    editName.Text := JSONPackage.Package.Name;
-    editDownloadURL.Text := JSONPackage.Package.DownloadURL;
-    cbForceUpdate.Checked := JSONPackage.Package.ForceUpdate;
-
-    stringPackageFiles.RowCount := JSONPackage.PackageFiles.Count + 1;
-    for i := 0 to JSONPackage.PackageFiles.Count - 1 do
-    begin
-      stringPackageFiles.Cells[0, i + 1] := JSONPackage.PackageFiles.Items[i].Name;
-      stringPackageFiles.Cells[1, i + 1] := JSONPackage.PackageFiles.Items[i].Version;
+      stringPackageFiles.RowCount := JSONPackage.PackageFiles.Count + 1;
+      for i := 0 to JSONPackage.PackageFiles.Count - 1 do
+      begin
+        stringPackageFiles.Cells[0, i + 1] := JSONPackage.PackageFiles.Items[i].Name;
+        stringPackageFiles.Cells[1, i + 1] := JSONPackage.PackageFiles.Items[i].Version;
+      end;
+     end
+     else
+     ShowMessageFmt('There was a problem loading "%s" - is it corrupted or in the wrong format?',
+     [ExtractFilename(FileOpen1.Dialog.FileName)]);
+    finally
+     JSONPackage.Free;
     end;
-
-    JSONPackage.Free;
   end;
 end;
 
@@ -724,7 +732,9 @@ begin
     end
     else
     if JSONPackage.SaveToFile(sJSONFilePath) then
-      ShowMessage(sJSONFilePath + rsSavedOK);
+      ShowMessage(sJSONFilePath + rsSavedOK)
+    else
+      ShowMessage(rsSaveUnsucces);
     bDirty := False;
   finally
     JSONPackage.Free;
@@ -795,11 +805,12 @@ begin
   inherited Destroy;
 end;
 
-procedure TPackage.LoadFromFile(AFileName: string);
+Function TPackage.LoadFromFile(AFileName: string):Boolean;
 var
   DeStreamer: TJSONDeStreamer;
   s: TStringList;
 begin
+  Result:=TRUE;
   s := TStringList.Create;
   TRY
    s.LoadFromFile(AFileName);
@@ -807,8 +818,7 @@ begin
    TRY
      DeStreamer.JSONToObject(s.Text, Self);
    EXCEPT
-     On E:Exception do
-     ShowMessage('The json file appears to be corrupted or in the wrong format');
+     On E:Exception do Result:=FALSE;
    end;
   Finally
     DeStreamer.Free;
@@ -831,7 +841,7 @@ begin
       s.SaveToFile(AFileName);
       Result := True;
     except
-      ShowMessage(rsSaveUnsucces);
+
     end;
   finally
     Streamer.Free;