Error in some temp file

I compile my app and I get 3 errors - All inside some temporary .cs file that VS must be creating:
Error    1    'ASP.emailjob_aspx.GetTypeHashCode()': no suitable method found to override    c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\exacttarget\897d238b\7621b408\App_Web_gcog551f.0.cs    296   
Error    2    'ASP.emailjob_aspx.ProcessRequest(System.Web.HttpContext)': no suitable method found to override    c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\exacttarget\897d238b\7621b408\App_Web_gcog551f.0.cs    301   
Error    3    'ASP.emailjob_aspx' does not implement interface member 'System.Web.IHttpHandler.IsReusable'    c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\ex ...