Sorry this was an earlier event for which I no longer have logs.
Should I reinstall .NET 4.0? (I have 4.7).

Code:
Log Name:      Application
Source:        ASP.NET 4.0.30319.0
Date:          26/01/2018 6:45:34 PM
Event ID:      1310
Task Category: Web Event
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      smurfpc
Description:
Event code: 3008 
Event message: A configuration error has occurred. 
Event time: 1/26/2018 6:45:34 PM 
Event time (UTC): 1/26/2018 10:45:34 AM 
Event ID: ab53f3d53b72445a8136e82d5bbabbf7 
Event sequence: 11 
Event occurrence: 10 
Event detail code: 0 
 
Application information: 
    Application domain: aa85f57-1-131614335015208486 
    Trust level: Full 
    Application Virtual Path: / 
    Application Path: C:\Users\Public\NPVR\web\ 
    Machine name: SMURFPC 
 
Process information: 
    Process ID: 4896 
    Process name: NRecord.exe 
    Account name: NT AUTHORITY\SYSTEM 
 
Exception information: 
    Exception type: ConfigurationErrorsException 
    Exception message: The type 'JsonCompressionModule' is ambiguous: it could come from assembly 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\0a635572\38fd2de4\App_Code.xbws2q6o.DLL' or from assembly 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\0a635572\38fd2de4\App_Code.n-crc3lc.DLL'. Please specify the assembly explicitly in the type name. (C:\Users\Public\NPVR\web\web.config line 59) (C:\Users\Public\NPVR\web\web.config line 59)
   at System.Web.Configuration.HttpModuleAction.get_Entry()
   at System.Web.Configuration.HttpModulesSection.CreateModules()
   at System.Web.HttpApplication.InitModules()
   at System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers)
   at System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context)
   at System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context)
   at System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr)


 
 
Request information: 
    Request URL: http://[::ffff:192.168.1.10]:8866/guide.aspx 
    Request path: /guide.aspx 
    User host address: ::ffff:192.168.1.10 
    User:  
    Is authenticated: False 
    Authentication Type:  
    Thread account name: NT AUTHORITY\SYSTEM 
 
Thread information: 
    Thread ID: 21 
    Thread account name: NT AUTHORITY\SYSTEM 
    Is impersonating: False 
    Stack trace:    at System.Web.Configuration.HttpModuleAction.get_Entry()
   at System.Web.Configuration.HttpModulesSection.CreateModules()
   at System.Web.HttpApplication.InitModules()
   at System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers)
   at System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context)
   at System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context)
   at System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr)
 
 
Custom event details: Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="ASP.NET 4.0.30319.0" />
    <EventID Qualifiers="32768">1310</EventID>
    <Level>3</Level>
    <Task>3</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2018-01-26T10:45:34.211814100Z" />
    <EventRecordID>8711</EventRecordID>
    <Channel>Application</Channel>
    <Computer>smurfpc</Computer>
    <Security />
  </System>
  <EventData>
    <Data>3008</Data>
    <Data>A configuration error has occurred.</Data>
    <Data>1/26/2018 6:45:34 PM</Data>
    <Data>1/26/2018 10:45:34 AM</Data>
    <Data>ab53f3d53b72445a8136e82d5bbabbf7</Data>
    <Data>11</Data>
    <Data>10</Data>
    <Data>0</Data>
    <Data>aa85f57-1-131614335015208486</Data>
    <Data>Full</Data>
    <Data>/</Data>
    <Data>C:\Users\Public\NPVR\web\</Data>
    <Data>SMURFPC</Data>
    <Data>
    </Data>
    <Data>4896</Data>
    <Data>NRecord.exe</Data>
    <Data>NT AUTHORITY\SYSTEM</Data>
    <Data>ConfigurationErrorsException</Data>
    <Data>The type 'JsonCompressionModule' is ambiguous: it could come from assembly 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\0a635572\38fd2de4\App_Code.xbws2q6o.DLL' or from assembly 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\0a635572\38fd2de4\App_Code.n-crc3lc.DLL'. Please specify the assembly explicitly in the type name. (C:\Users\Public\NPVR\web\web.config line 59) (C:\Users\Public\NPVR\web\web.config line 59)
   at System.Web.Configuration.HttpModuleAction.get_Entry()
   at System.Web.Configuration.HttpModulesSection.CreateModules()
   at System.Web.HttpApplication.InitModules()
   at System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers)
   at System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context)
   at System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context)
   at System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr)


</Data>
    <Data>http://[::ffff:192.168.1.10]:8866/guide.aspx</Data>
    <Data>/guide.aspx</Data>
    <Data>::ffff:192.168.1.10</Data>
    <Data>
    </Data>
    <Data>False</Data>
    <Data>
    </Data>
    <Data>NT AUTHORITY\SYSTEM</Data>
    <Data>21</Data>
    <Data>NT AUTHORITY\SYSTEM</Data>
    <Data>False</Data>
    <Data>   at System.Web.Configuration.HttpModuleAction.get_Entry()
   at System.Web.Configuration.HttpModulesSection.CreateModules()
   at System.Web.HttpApplication.InitModules()
   at System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers)
   at System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context)
   at System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context)
   at System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr)
</Data>
  </EventData>
</Event>
Code:
Event code: 3005 
Event message: An unhandled exception has occurred. 
Event time: 1/31/2018 10:36:12 PM 
Event time (UTC): 1/31/2018 2:36:12 PM 
Event ID: fa30ee654fce49f591b1e9aa28923b25 
Event sequence: 16 
Event occurrence: 1 
Event detail code: 0 
 
Application information: 
    Application domain: aa85f57-1-131616954947904992 
    Trust level: Full 
    Application Virtual Path: / 
    Application Path: C:\Users\Public\NPVR\web\ 
    Machine name: SMURFPC 
 
Process information: 
    Process ID: 3664 
    Process name: NRecord.exe 
    Account name: NT AUTHORITY\SYSTEM 
 
Exception information: 
    Exception type: HttpException 
    Exception message: A potentially dangerous Request.Path value was detected from the client (&).
   at System.Web.HttpRequest.ValidateInputIfRequiredByConfig()
   at System.Web.HttpApplication.ValidateRequestExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)


 
 
Request information: 
    Request URL: http://[::ffff:192.168.1.10]:8866/stream/Orange Is the New Black - S01E04 Imaginary Enemies.mp4&mode=http?f=D:\PlayOnVids\Orange Is the New Black\Season 1\ 
    Request path: /stream/Orange Is the New Black - S01E04 Imaginary Enemies.mp4&mode=http 
    User host address: ::ffff:192.168.1.219 
    User:  
    Is authenticated: False 
    Authentication Type:  
    Thread account name: NT AUTHORITY\SYSTEM 
 
Thread information: 
    Thread ID: 103 
    Thread account name: NT AUTHORITY\SYSTEM 
    Is impersonating: False 
    Stack trace:    at System.Web.HttpRequest.ValidateInputIfRequiredByConfig()
   at System.Web.HttpApplication.ValidateRequestExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
 
 
Custom event details: