App Horizon

Horizon Support | Ultimate Help Thread


Yeah I already uninstalled it, because it was of no good to me. And still nothing


Completely uninstall Horizon and reinstall from here Horizon


Still getting the Access Denied


Also it wont let me drag the profile to the grey area of Horizon not sure if thats because the file type or something. New problem XD I get this when I try and quick fix the file…

************** Exception Text **************
System.Security.Cryptography.CryptographicException: Access is denied.

at System.Security.Cryptography.CryptographicException.ThrowCryptogaphicException(Int32 hr)
at System.Security.Cryptography.Utils._CreateCSP(CspParameters param, Boolean randomKeyContainer, SafeProvHandle& hProv)
at System.Security.Cryptography.Utils.CreateProvHandle(CspParameters parameters, Boolean randomKeyContainer)
at System.Security.Cryptography.RSACryptoServiceProvider.ImportParameters(RSAParameters parameters)
at (Object , RSAParameters )
at A.QGG.E(Object E, RSAParameters H)
at A.RU.E(RSAParameters E, Byte[] H)
at A.XE.U()
at A.XE.E(Boolean E)
at A.XE.L()
at A.NFB.Horizon(String E)
at A.NFB.Horizon(String[] E)
at A.NFB.Horizon(Object E, EventArgs H)
at DevComponents.DotNetBar.BaseItem.RaiseClick(eEventSource source)
at DevComponents.DotNetBar.BaseItem.InternalMouseUp(MouseEventArgs objArg)
at DevComponents.DotNetBar.PopupItem.InternalMouseUp(MouseEventArgs objArg)
at DevComponents.DotNetBar.ButtonItem.InternalMouseUp(MouseEventArgs objArg)
at DevComponents.DotNetBar.BaseItem.InternalMouseUp(MouseEventArgs objArg)
at DevComponents.DotNetBar.GenericItemContainer.InternalMouseUp(MouseEventArgs objArg)
at DevComponents.DotNetBar.RibbonStripContainerItem.InternalMouseUp(MouseEventArgs objArg)
at DevComponents.DotNetBar.ItemControl.OnMouseUp(MouseEventArgs e)
at DevComponents.DotNetBar.RibbonStrip.OnMouseUp(MouseEventArgs e)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at DevComponents.DotNetBar.ItemControl.WndProc(Message& m)
at DevComponents.DotNetBar.RibbonStrip.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 **************
Assembly Version:
Win32 Version: 2.0.50727.6419 (Win8RTMGDR.050727-6400)
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll

Assembly Version:
Win32 Version:
CodeBase: file:///C:/Program%20Files%20(x86)/Daring%20Development/Horizon/v2/Horizon.exe

Assembly Version:
Win32 Version: 2.0.50727.6401 (Win8RTMGDR.050727-6400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/

Assembly Version:
Win32 Version:
CodeBase: file:///C:/Program%20Files%20(x86)/Daring%20Development/Horizon/v2/DevComponents.DotNetBar2.DLL

Assembly Version:
Win32 Version: 2.0.50727.6419 (Win8RTMGDR.050727-6400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/

Assembly Version:
Win32 Version: 2.0.50727.6419 (Win8RTMGDR.050727-6400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/

Assembly Version:
Win32 Version:
CodeBase: file:///C:/Program%20Files%20(x86)/Daring%20Development/Horizon/v2/Ionic.Zlib.CF.DLL

Assembly Version:
Win32 Version:
CodeBase: file:///C:/Program%20Files%20(x86)/Daring%20Development/Horizon/v2/ICSharpCode.SharpZipLib.DLL

Assembly Version:
Win32 Version:
CodeBase: file:///C:/Program%20Files%20(x86)/Daring%20Development/Horizon/v2/System.Data.SQLite.DLL

Assembly Version:
Win32 Version: 2.0.50727.6419 (Win8RTMGDR.050727-6400)
CodeBase: file:///C:/Windows/assembly/GAC_32/System.Data/

Assembly Version:
Win32 Version: 2.0.50727.6419 (Win8RTMGDR.050727-6400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Management/

Assembly Version:
Win32 Version: 2.0.50727.6419 (Win8RTMGDR.050727-6400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Configuration/

Assembly Version:
Win32 Version: 3.5.30729.6387 built by: Win8RTM
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Core/

Assembly Version:
Win32 Version: 2.0.50727.6419 (Win8RTMGDR.050727-6400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Xml/

Assembly Version:
Win32 Version: 2.0.50727.6401 (Win8RTMGDR.050727-6400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/

Assembly Version:
Win32 Version: 2.0.50727.6419 (Win8RTMGDR.050727-6400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Accessibility/

Assembly Version:
Win32 Version: 2.0.50727.6401 (Win8RTMGDR.050727-6400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the section.
The application must also be compiled with debugging

For example:

< jitDebugging=“true” />

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.


I downloaded from new link above but when i double click the exe file to start nothing happens…anyone with an idea as to why? My antivirus is off.


Every time no matter what I do my games keep saying Failed to load content but every thing else is loading in properly.


What content for what games? is it something you added or modded with Horizon?


I am trying to update Horizon today. And when I try to complete the update I get an error message that read:

“The following applications are using files that need to be updated by Setup. It is recommended that you allow Setup to automatically close these applications. After the installation has completed, Setup will attempt to restart the applications.”

Then in a little box it says “Horizon”

If I continue and press Next. I get a pop up that reads:

“[Error] Setup was unable to automatically close all applications. It is recommended that you close all applications using files that need to be updated by Setup before continuing.”

“Click Retry to try again, Ignore to proceed anyway, or Abort to cancel installation.”

If I click Ignore. The installation goes through, but then when Horizon opens it tells me that I need to download the latest update for Diamond.

Can some please help me with this? Not sure if anyone else is having this same problem.


Try this first, uninstall Horizon from your computer and try downloading and installing the latest version from here: Horizon


Thanks a lot. I got Horizon to download and open up successfully. :thumbsup:


Sweet! I actually beat n i c k to a successful help attempt this week.
Steve = 1
n i c k = 9

  • Type of Problem : Immediately says that horizon has stopped working when I run it
  • OS : Windows Vista
  • Antivirus/Firewall : None, just windows firewall and I’ve set it to let horizon through
  • Errors : None
  • Extra Information : Was having .net framework issues so i uninstalled and re downloaded that


Hmm, do you have the latest Horizon update?

Download Horizon v2.8.0.1


I tried after downloading that version and it did the same thing.


Do you have the latest Windows Update? Check your Windows Updates by going to START and then SEARCH FOR WINDOWS UPDATE and when you click on that it should scan for updates, take all the updates that show up.


Installing windows updates worked like a charm, thank you so much.


No problem, glad you got it to work!


I keep getting the message the key is missing from the dictionary what do I do.?


Having trouble saving paint, tune, and vinyl files in Forza 4. Object is not set to an instance of an object or smething…
This happend after the patch, it was working until then, any ideas?


Try this:

  1. Extract the save you want to mod to your desktop by simply dragging it out of the Horizon window.
  2. Drag it back into Horizon and mod what you want and choose to save.
  3. Now choose to Save to Device in the top right corner of your opened save package, it will ask if you want to save changes before saving, choose yes, now you should get a message about the item already exists on the device, would you like to overwrite it? choose yes.