I tried to install SEO Link checker on my site (Umbraco v6.2.5) and the install caused my site not to be able to load up anymore.

How can I manually uninstall SEO link checker to get my site working again?

The error I get is:

Could not load file or assembly 'HtmlAgilityPack, Version=1.4.5.0, Culture=neutral, PublicKeyToken=bd319b19eaf3b43a' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

[FileLoadException: Could not load file or assembly 'HtmlAgilityPack, Version=1.4.5.0, Culture=neutral, PublicKeyToken=bd319b19eaf3b43a' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)] System.Reflection.RuntimeAssembly.GetExportedTypes(RuntimeAssembly assembly, ObjectHandleOnStack retTypes) +0 System.Reflection.RuntimeAssembly.GetExportedTypes() +49 Umbraco.Core.TypeFinder.GetTypesWithFormattedException(Assembly a) in d:\Dev\Umbraco6\src\Umbraco.Core\TypeFinder.cs:651 Umbraco.Core.TypeFinder.GetClasses(Type assignTypeFrom, IEnumerable1 assemblies, Boolean onlyConcreteClasses, Func2 additionalFilter) in d:\Dev\Umbraco6\src\Umbraco.Core\TypeFinder.cs:579 Umbraco.Core.TypeFinder.GetClasses(Type assignTypeFrom, IEnumerable1 assemblies, Boolean onlyConcreteClasses, Func2 additionalFilter) in d:\Dev\Umbraco6\src\Umbraco.Core\TypeFinder.cs:631 Umbraco.Core.PluginManager.LoadViaScanningAndUpdateCacheFile(TypeList typeList, TypeResolutionKind resolutionKind, Func1 finder) in d:\Dev\Umbraco6\src\Umbraco.Core\PluginManager.cs:749 Umbraco.Core.PluginManager.ResolveTypes(Func1 finder, TypeResolutionKind resolutionType, Boolean cacheResult) in d:\Dev\Umbraco6\src\Umbraco.Core\PluginManager.cs:720 Umbraco.Core.PluginManager.ResolveTypes(Boolean cacheResult, IEnumerable`1 specificAssemblies) in d:\Dev\Umbraco6\src\Umbraco.Core\PluginManager.cs:764 Umbraco.Web.WebBootManager.InitializeApplicationEventsResolver() +35 Umbraco.Core.CoreBootManager.Initialize() in d:\Dev\Umbraco6\src\Umbraco.Core\CoreBootManager.cs:80 Umbraco.Web.WebBootManager.Initialize() +55 Umbraco.Core.UmbracoApplicationBase.StartApplication(Object sender, EventArgs e) in d:\Dev\Umbraco6\src\Umbraco.Core\UmbracoApplicationBase.cs:40