Dee_vbulletin3_import36887
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after i installed visual studio.net<BR><BR>I can still run my asp program. but have a bit trouble to run asp.net program.<BR><BR>I have win200 Advance Server installed ,NTFS for hard drive.<BR><BR>and I am sure my program is fine. Cuz , it Works fine on antoher computer. That computer is win2k professional, Fat32 for hard drive.<BR><BR>the error message i got is :<BR><BR>Server Error in '/' Application.<BR>--------------------------------------------------------------------------------<BR><BR>Object reference not set to an instance of an object. <BR>Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. <BR><BR>Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.<BR><BR>Source Error: <BR><BR>An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. <BR><BR>Stack Trace: <BR><BR><BR>[NullReferenceException: Object reference not set to an instance of an object.]<BR> System.Web.UI.Util.MakeValidTypeNameFromString(Str ing s) +31<BR> System.Web.Compilation.BaseCompiler.GetGeneratedCl assName() +59<BR> System.Web.Compilation.BaseCompiler.BuildSourceDat aTree() +389<BR> System.Web.Compilation.BaseCompiler.GetCompiledTyp e() +152<BR> System.Web.UI.PageParser.CompileIntoType() +60<BR> System.Web.UI.TemplateParser.GetParserCacheItemThr oughCompilation() +126<BR><BR>[HttpException (0x80004005): Object reference not set to an instance of an object.]<BR> System.Web.UI.TemplateParser.GetParserCacheItemInt ernal(Boolean fCreateIfNotFound) +828<BR> System.Web.UI.TemplateParser.GetParserCacheItemWit hNewConfigPath() +125<BR> System.Web.UI.TemplateParser.GetParserCacheItem() +88<BR> System.Web.UI.TemplateControlParser.CompileAndGetP arserCacheItem(String virtualPath, String inputFile, HttpContext context) +120<BR> System.Web.UI.TemplateControlParser.GetCompiledIns tance(String virtualPath, String inputFile, HttpContext context) +36<BR> System.Web.UI.PageParser.GetCompiledPageInstance(S tring virtualPath, String inputFile, HttpContext context) +43<BR> System.Web.UI.PageHandlerFactory.GetHandler(HttpCo ntext context, String requestType, String url, String path) +14<BR> System.Web.HttpApplication.MapHttpHandler(HttpCont ext context, String requestType, String path, String pathTranslated, Boolean useAppConfig) +174<BR> System.Web.MapHandlerExecutionStep.Execute() +77<BR> System.Web.HttpApplication.ExecuteStep(IExecutionS tep step, Boolean& completedSynchronously) +173<BR><BR> <BR><BR><BR>--------------------------------------------------------------------------------<BR>Version Information: Microsoft .NET Framework Version:1.0.3705.209; ASP.NET Version:1.0.3705.0 <BR><BR>Does it give you a line number?... The error its giving you means that you have an object thats not been set. Or its nothing/null. Usually when I get this error it outputs the line of code that contains the null object.