# V4 release candidate closes on start
**URL:** https://community.xibo.org.uk/t/v4-release-candidate-closes-on-start/29890
**Category:** Xibo Player for Windows
**Created:** [August 24, 2023, 5:34pm UTC](https://community.xibo.org.uk/t/v4-release-candidate-closes-on-start/29890 "2023-08-24T17:34:28Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@vashadow](https://community.xibo.org.uk/u/vashadow)
#### Post date: [August 24, 2023, 5:34pm UTC](https://community.xibo.org.uk/t/v4-release-candidate-closes-on-start/29890/1 "2023-08-24T17:34:28Z")
Running the Windows client for rc1 on my Windows 11 test machine, it opens and closes immediately. I went into the client folder and found a log that looks like one of its dependencies is missing. What dependence is this, and can it be added to the installer?
```auto
2023-08-24 13:30:17MainUnhandled Exception: UnhandledException: Could not load file or assembly 'CefSharp, Version=112.2.70.0, Culture=neutral, PublicKeyToken=40c4b6fc221f4138' or one of its dependencies. The system cannot find the file specified.
2023-08-24 13:30:17MainStack Trace: at XiboClient.MainWindow.MainWindow_Loaded(Object sender, RoutedEventArgs e)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
at System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent)
at System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(Object root)
at MS.Internal.LoadedOrUnloadedOperation.DoWork()
at System.Windows.Media.MediaContext.FireLoadedPendingCallbacks()
at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
at System.Windows.Media.MediaContext.Resize(ICompositionTarget resizedCompositionTarget)
at System.Windows.Interop.HwndTarget.OnResize()
at System.Windows.Interop.HwndTarget.HandleMessage(WindowMessage msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
```
---
### Author:  [@dan](https://community.xibo.org.uk/u/dan)
#### Post date: [August 25, 2023, 7:41am UTC](https://community.xibo.org.uk/t/v4-release-candidate-closes-on-start/29890/2 "2023-08-25T07:41:04Z")
> [@vashadow](#):
>
> What dependence is this, and can it be added to the installer?
Did you install the [Microsoft Visual C++ 2015-2022 Redistributable](https://download.visualstudio.microsoft.com/download/pr/2250605e-e48f-43ed-ba6e-e0cc18bc530d/AC75A82D873E6B6F98B1D293042380764D7D263C43438E50D564FA58C9F891C2/VC_redist.x86.exe) when prompted by the installer? CefSharp requires this to operate, and I think you’d get the error you’re getting if it wasn’t installed.
---
### Author:  [@vashadow](https://community.xibo.org.uk/u/vashadow)
#### Post date: [August 25, 2023, 1:37pm UTC](https://community.xibo.org.uk/t/v4-release-candidate-closes-on-start/29890/3 "2023-08-25T13:37:54Z")
I don’t remember the installer prompting me to install anything but trying to troubleshoot this issue I did install the 64bit version of that redistributable. But I am still having the same issue. I just tried to install the one you linked and it told me another was already installed.
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### Author:  [@dan](https://community.xibo.org.uk/u/dan)
#### Post date: [August 25, 2023, 4:17pm UTC](https://community.xibo.org.uk/t/v4-release-candidate-closes-on-start/29890/4 "2023-08-25T16:17:59Z")
@DanBW @Frazer either of you seen this before?
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### Author:  [@vashadow](https://community.xibo.org.uk/u/vashadow)
#### Post date: [August 25, 2023, 8:19pm UTC](https://community.xibo.org.uk/t/v4-release-candidate-closes-on-start/29890/5 "2023-08-25T20:19:38Z")
I got the player working on this machine by uninstalling and reinstalling. I think it might have been something with me installing the 4.0 player on top of the older player. I figured an in place upgrade was supported, but seems something did not like it.
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### Author:  [@dan](https://community.xibo.org.uk/u/dan)
#### Post date: [August 26, 2023, 12:35pm UTC](https://community.xibo.org.uk/t/v4-release-candidate-closes-on-start/29890/6 "2023-08-26T12:35:32Z")
> [@vashadow](#):
>
> I figured an in place upgrade was supported
Yeah it absolutely should be - we’ve done an in place upgrade in our lab multiple times without any issues.
I’ll go ahead an double check we’re not missing anything from the installer, and rerun some more upgrade tests.
Thanks for the feedback!
---
### Author:  [@DanBW](https://community.xibo.org.uk/u/DanBW)
#### Post date: [August 29, 2023, 9:29am UTC](https://community.xibo.org.uk/t/v4-release-candidate-closes-on-start/29890/7 "2023-08-29T09:29:07Z")
Hi Dan and vashadow.
I’ve not seen this behaviour but I’ll test installing and upgrading from older releases to see if the same issue occurs.
@vashadow do you know what player version you were using when you attempted the upgrade? No worries if not, just wondering in case that’s significant.
---
### Author:  [@vashadow](https://community.xibo.org.uk/u/vashadow)
#### Post date: [August 29, 2023, 1:15pm UTC](https://community.xibo.org.uk/t/v4-release-candidate-closes-on-start/29890/8 "2023-08-29T13:15:39Z")
windows 3 R309.1-309
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### Author:  [@DanBW](https://community.xibo.org.uk/u/DanBW)
#### Post date: [August 30, 2023, 11:59am UTC](https://community.xibo.org.uk/t/v4-release-candidate-closes-on-start/29890/9 "2023-08-30T11:59:36Z")
Thank you vashadow. I have managed to replicate the behaviour you are experiencing and will report the details to the developers. Thank you for bringing this issue to our attention.
Many Thanks.
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### Author:  [@DanBW](https://community.xibo.org.uk/u/DanBW)
#### Post date: [August 30, 2023, 12:19pm UTC](https://community.xibo.org.uk/t/v4-release-candidate-closes-on-start/29890/10 "2023-08-30T12:19:07Z")
This is a follow up confirming that the issue is resolved in the latest revision of the R400 player (R400.5). You can download a copy of the newer version [here](https://xibo-firmware.fra1.cdn.digitaloceanspaces.com/Windows-Test-MSI/xibo-client-v4-R400.5-win32-x86.msi).
---
### Author:  [@system](https://community.xibo.org.uk/u/system)
#### Post date: [November 29, 2023, 6:19pm UTC](https://community.xibo.org.uk/t/v4-release-candidate-closes-on-start/29890/11 "2023-11-29T18:19:22Z")
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