diff --git a/CSE/GUI/F_Main.vb b/CSE/GUI/F_Main.vb
index 493d774346cf0092957cf74463a6df0af5f8c13c..e2b2bebbbb1a641a5866cc7715b3041f48a168c2 100644
--- a/CSE/GUI/F_Main.vb
+++ b/CSE/GUI/F_Main.vb
@@ -956,7 +956,8 @@ Public Class F_Main
 
     ' Menu open the user manual
     Private Sub ToolStripMenuItemManu_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ToolStripMenuItemManu.Click
-        Dim manual_fname As String = joinPaths(MyPath, "Docs", "VECTO_CSE-User Manual_" & AppVers & ".pdf")
+        Dim manual_fname As String = (From fi As IO.FileInfo In (New IO.DirectoryInfo(joinPaths(MyPath, "Docs")).GetFiles("*VECTO_CSE-User Manual*.pdf", IO.SearchOption.TopDirectoryOnly)) Order By fi.LastAccessTime Select fi)(0).FullName
+
         Try
             System.Diagnostics.Process.Start(manual_fname)
         Catch ex As Exception
@@ -966,7 +967,8 @@ Public Class F_Main
 
     ' Menu open the release nodes
     Private Sub ReleaseNotesToolStripMenuItem_Click(sender As Object, e As EventArgs) Handles ReleaseNotesToolStripMenuItem.Click
-        Dim release_fname As String = joinPaths(MyPath, "Docs", "VECTO-CSE_ReleaseNotes_" & AppVers & ".pdf")
+        Dim release_fname As String = (From fi As IO.FileInfo In (New IO.DirectoryInfo(joinPaths(MyPath, "Docs")).GetFiles("*VECTO-CSE_ReleaseNotes*.pdf", IO.SearchOption.TopDirectoryOnly)) Order By fi.LastAccessTime Select fi)(0).FullName
+
         Try
             System.Diagnostics.Process.Start(release_fname)
         Catch ex As Exception
diff --git a/CSE/declaration_public.vb b/CSE/declaration_public.vb
index 7c86c43dec369522cd749590a59614ed1ddd892c..af79cd48d69eefc5bd1687ccf293864c0103e14c 100644
--- a/CSE/declaration_public.vb
+++ b/CSE/declaration_public.vb
@@ -13,7 +13,7 @@ Module declaration_public
 
     ' Description of the form
     Public Const AppName As String = "VECTO_CSE"                ' Name of the programm
-    Public Const AppVers As String = "2.0.2-beta6"                    ' Version of the Programm
+    Public Const AppVers As String = "2.0.3-beta6"              ' Version of the Programm
     Public AppDate As String                                    ' Date of the compilation of the programm
 
     ' Control variables
diff --git a/CSE/utils.vb b/CSE/utils.vb
index c38fbc48c31b37ed3c3da32de798aa73fc7349cd..bc5145fe801d8ec6c522038046550041beb3ca05 100644
--- a/CSE/utils.vb
+++ b/CSE/utils.vb
@@ -151,8 +151,7 @@ Module utils
     End Function
 #End Region ' File paths'
 
-    ' Function for a linear interpolation
-
+    ' Functions for linear interpolation
 #Region "Calculation programms"
 
     ' Function for a linear interpolation