C# - Application Finds Local Resource Files In Web Development Server But Not Local IIS

When I run the application using the Web Developer it works fine. However when I run it using local IIS I get the following error:

The resource class for this page was not found. check if the resource file exists and try again. Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: The resource class for this page was not found. heck if the resource file exists and try again.

Source Error:

Line 81: private void PopulateLanguageList()
Line 82: {
Line 83: DropDownListLanguage.Items[0].Text = (string)HttpContext.GetLocalResourceObject(
Line 84: "Default.aspx", SelectLanguage, Thread.CurrentThread.CurrentCulture);
Line 85: }

Stack Trace:

[InvalidOperationException: The resource class for this page was not found. Please check if the resource file exists and try again.]
System.Web.Compilation.LocalResXResourceProvider.CreateResourceManager() +4038050
System.Web.Compilation.BaseResXResourceProvider.EnsureResourceManager() +23
System.Web.Compilation.BaseResXResourceProvider.GetObject(String resourceKey, CultureInfo culture) +24
System.Web.Compilation.ResourceExpressionBuilder.GetResourceObject(IResourceProvider resourceProvider, String resourceKey, CultureInfo culture, Type objType, String propName) +32
System.Web.HttpContext.GetLocalResourceObject(String virtualPath, String resourceKey, CultureInfo culture) +56
APPortal.Login.PopulateLanguageList() in c:inetpubwwwrootAPPortalDefault.aspx.cs:83
APPortal.Login.Page_Load(Object sender, EventArgs e) in c:inetpubwwwrootAPPortalDefault.aspx.cs:20
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +42
System.Web.UI.Control.OnLoad(EventArgs e) +132
System.Web.UI.Control.LoadRecursive() +66
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2428