This is the error that straightaway poped up after installing the 2.8.62 version.
System.ArgumentException: File format is not valid.
at System.Windows.Forms.RichTextBox.StreamIn(Stream data, Int32 flags)
at System.Windows.Forms.RichTextBox.StreamIn(String str, Int32 flags)
at System.Windows.Forms.RichTextBox.set_Rtf(String value)
at (Object , String )
at A.VGI.E(Object E, String H)
at A.GHB.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5485 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
Horizon
Assembly Version: 2.8.6.2
Win32 Version: 2.8.6.2
CodeBase: file:///C:/Program%20Files%20(x86)/HorizonMB/Horizon.exe
System
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5485 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
DevComponents.DotNetBar2
Assembly Version: 8.9.0.5
Win32 Version: 8.9.0.5
CodeBase: file:///C:/Program%20Files%20(x86)/HorizonMB/DevComponents.DotNetBar2.DLL
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5483 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
System.Drawing
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5483 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
Ionic.Zlib.CF
Assembly Version: 1.9.1.5
Win32 Version: 1.9.1.5
CodeBase: file:///C:/Program%20Files%20(x86)/HorizonMB/Ionic.Zlib.CF.DLL
ICSharpCode.SharpZipLib
Assembly Version: 0.86.0.518
Win32 Version: 0.86.0.518
CodeBase: file:///C:/Program%20Files%20(x86)/HorizonMB/ICSharpCode.SharpZipLib.DLL
System.Data.SQLite
Assembly Version: 1.0.65.0
Win32 Version: 1.0.65.0
CodeBase: file:///C:/Program%20Files%20(x86)/HorizonMB/System.Data.SQLite.DLL
System.Data
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5483 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_32/System.Data/2.0.0.0__b77a5c561934e089/System.Data.dll
System.Management
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5483 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Management/2.0.0.0__b03f5f7f11d50a3a/System.Management.dll
System.Configuration
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5483 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
System.Core
Assembly Version: 3.5.0.0
Win32 Version: 3.5.30729.5420 built by: Win7SP1
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Core/3.5.0.0__b77a5c561934e089/System.Core.dll
System.Xml
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5485 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
fv81rwso
Assembly Version: 0.0.0.0
Win32 Version: 2.0.50727.5485 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
Accessibility
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5483 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Accessibility/2.0.0.0__b03f5f7f11d50a3a/Accessibility.dll
z_it5wxm
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5485 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
May be you guys could see if this could use the .net dlls than old outdated 2.0 and instead use the 4.0 dlls and also by the way there is a new net framework 4.6RC version available.