website down error

Hi,

My website is not working due to following error,  plz suggest what is issue.



Server Error in '/' Application.
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Unknown Error (-1).
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.

Exception Details: System.IO.IOException: Unknown Error (-1).

Source Error:

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.  

Stack Trace:


[IOException: Unknown Error (-1).]
   System.IO.__Error.WinIOError(Int32 errorCode, String str) +723
   System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean useAsync, String msgPath, Boolean bFromProxy) +888
   System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize) +44
   System.IO.StreamWriter.CreateFile(String path, Boolean append) +55
   System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding, Int32 bufferSize) +49
   System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding) +20
   System.Web.Compilation.PreservedAssemblyEntry.WritePreservedSpecialFilesCombinedHash(Int64 hash) +165
   System.Web.Compilation.PreservedAssemblyEntry.DoFirstTimeInit(HttpContext context) +851
   System.Web.Compilation.PreservedAssemblyEntry.EnsureFirstTimeInit(HttpContext context) +97
   System.Web.Compilation.PreservedAssemblyEntry.GetPreservedAssemblyEntry(HttpContext context, String virtualPath, Boolean fApplicationFile) +29
   System.Web.UI.TemplateParser.GetParserCacheItemFromPreservedCompilation() +91
   System.Web.UI.TemplateParser.GetParserCacheItemInternal(Boolean fCreateIfNotFound) +178
   System.Web.UI.TemplateParser.GetParserCacheItemWithNewConfigPath() +125
   System.Web.UI.TemplateParser.GetParserCacheItem() +99
   System.Web.UI.TemplateControlParser.CompileAndGetParserCacheItem(String virtualPath, String inputFile, HttpContext context) +116
   System.Web.UI.TemplateControlParser.GetCompiledInstance(String virtualPath, String inputFile, HttpContext context) +36
   System.Web.UI.PageParser.GetCompiledPageInstanceInternal(String virtualPath, String inputFile, HttpContext context) +43
   System.Web.UI.PageHandlerFactory.GetHandler(HttpContext context, String requestType, String url, String path) +44
   System.Web.HttpApplication.MapHttpHandler(HttpContext context, String requestType, String path, String pathTranslated, Boolean useAppConfig) +696
   System.Web.MapHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() +95
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +173

 


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Version Information: Microsoft .NET Framework Version:1.1.4322.2300; ASP.NET Version:1.1.4322.2300


Thanks
Naresh