I reinstalled it twice now, coming from 6.1.X. I keep getting this error message so I know it wasn't human error on merging my files.

Any ideas? It looks like it's trying to start the Install folder and something is holding it up in the bin folder.

[ArgumentException: '', hexadecimal value 0x05, is an invalid character.]
   System.Xml.XmlUtf8RawTextWriter.InvalidXmlChar(Int32 ch, Byte* pDst, Boolean entitize) +3769260
   System.Xml.XmlUtf8RawTextWriter.WriteAttributeTextBlock(Char* pSrc, Char* pSrcEnd) +7517594
   System.Xml.XmlUtf8RawTextWriter.WriteString(String text) +56
   System.Xml.XmlWellFormedWriter.WriteString(String text) +7517663
   System.Xml.XmlWriter.WriteAttributeString(String prefix, String localName, String ns, String value) +41
   System.Xml.Linq.ElementWriter.WriteStartElement(XElement e) +308
   System.Xml.Linq.ElementWriter.WriteElement(XElement e) +70
   System.Xml.Linq.XElement.WriteTo(XmlWriter writer) +149
   System.Xml.Linq.XContainer.WriteContentTo(XmlWriter writer) +228
   System.Xml.Linq.XDocument.WriteTo(XmlWriter writer) +155
   System.Xml.Linq.XDocument.Save(String fileName, SaveOptions options) +213
   Umbraco.Core.PluginManager.UpdateCachedPluginsFile(IEnumerable`1 typesFound, TypeResolutionKind resolutionType) +915
   Umbraco.Core.PluginManager.LoadViaScanningAndUpdateCacheFile(TypeList typeList, TypeResolutionKind resolutionKind, Func`1 finder) +238
   Umbraco.Core.PluginManager.ResolveTypes(Func`1 finder, TypeResolutionKind resolutionType, Boolean cacheResult) +1942
   Umbraco.Core.PluginManager.ResolveTypes(Boolean cacheResult, IEnumerable`1 specificAssemblies) +183
   Umbraco.Core.CoreBootManager.InitializeApplicationEventsResolver() +36
   Umbraco.Core.CoreBootManager.Initialize() +359
   Umbraco.Web.WebBootManager.Initialize() +55
   Umbraco.Core.UmbracoApplicationBase.StartApplication(Object sender, EventArgs e) +127

[HttpException (0x80004005): '', hexadecimal value 0x05, is an invalid character.]
   System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context, HttpApplication app) +12949749
   System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +175
   System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +304
   System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +404
   System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +475

[HttpException (0x80004005): '', hexadecimal value 0x05, is an invalid character.]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +12966756
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +159
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +12806561

Any ideas?