Fixed reader startup with custom app name

src/org/interreg/docexplore/reader/ReaderElectronApp.java

@@ -58,9 +58,12 @@ public class ReaderElectronApp extends DocExploreTool
 			appDir = new File(DocExploreTool.getExecutableDir(), "readerapp");
 			if (!appDir.exists())
 				appDir = new File(DocExplore.readerApp());
-		}
+		}
+		else if (SystemUtils.IS_OS_MAC_OSX)
+			appDir = new File(DocExploreTool.getExecutableDir().getAbsoluteFile().getParentFile(), "MacOS");
+		
 		String app = SystemUtils.IS_OS_WINDOWS ? appDir.getAbsolutePath()+"/electron.exe" : 
-			SystemUtils.IS_OS_MAC_OSX ? "/Applications/DocExplore.app/Contents/MacOS/Electron" : 
+			SystemUtils.IS_OS_MAC_OSX ? appDir.getAbsolutePath()+"/Electron" : 
 			"electron";
 		
 		try