Interpretion for Connect.Dnn.Koi.DnnSkinFile.AutoDetect error

I've a DNN 8.0.3 site, with 2sxc 10.25.2 just installed. I had the old FAQ (v1) installed, then installed the latest (v2.x), deleted the old FAQ App.

Then when I created a new FAQ app I get the following (KOI?) error. I can go through and edit the FAQ template, data items and other aspects just fine. The browser console window doesn't show any related errors.

I'm guessing I need to add the Koi stuff to my stylesheet? Any other suggestions first?

Error: System.IO.FileLoadException: Could not load file or assembly 'System.Web.Helpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) File name: 'System.Web.Helpers, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' at Connect.Dnn.Koi.DnnSkinFile.AutoDetect() at Connect.Koi.Context.HttpContextState.TryToDetectTheCssFramework() at Connect.Koi.Context.HttpContextState.get_CssFramework() at Connect.Koi.Context.ToolsForCurrentState.get_Css() at Connect.Koi.Koi.Class(String classes) at ASP._Page_Portals_1_2sxc_FAQ__Categories_cshtml.Execute() in c:\inetpub\vhosts\vashonbeprepared.org\httpdocs\Portals\1\2sxc\FAQ_Categories.cshtml:line 7 at System.Web.WebPages.WebPageBase.ExecutePageHierarchy() at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) at System.Web.WebPages.WebPageBase.<>c__DisplayClass7.b__6(TextWriter writer) at System.Web.WebPages.HelperResult.WriteTo(TextWriter writer) at System.Web.WebPages.WebPageBase.Write(HelperResult result) at ASP._Page_Portals_1_2sxc_FAQ__FAQ_cshtml.Execute() in c:\inetpub\vhosts\vashonbeprepared.org\httpdocs\Portals\1\2sxc\FAQ_FAQ.cshtml:line 12 at System.Web.WebPages.WebPageBase.ExecutePageHierarchy() at System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) at ToSic.Sxc.Engines.RazorEngine.Render(TextWriter writer) in C:\Projects\2sxc-dnn742\Website\DesktopModules\ToSIC_SexyContent\2Sexy Content Razor\Engines\Razor\RazorEngine.cs:line 82 at ToSic.Sxc.Engines.RazorEngine.RenderTemplate() in C:\Projects\2sxc-dnn742\Website\DesktopModules\ToSIC_SexyContent\2Sexy Content Razor\Engines\Razor\RazorEngine.cs:line 91 at ToSic.Sxc.Engines.EngineBase.Render() in C:\Projects\2sxc-dnn742\Website\DesktopModules\ToSIC_SexyContent\ToSic.Sxc\Engines\EngineBase.cs:line 108 at ToSic.Sxc.Blocks.CmsBlock.Render() in C:\Projects\2sxc-dnn742\Website\DesktopModules\ToSIC_SexyContent\ToSic.Sxc\Blocks\CmsBlock_Render.cs:line 54 WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

I've not bothered to enable Fusion in the registry, but can.

THANKS!!!

This is something that randomly pops up - must be fixed in main web.config. Pls check https://github.com/2sic/2sxc/issues/1595