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JFRALEY7

External component has thrown an exception

Web Programming176
1) We did an xcopy of our latest production build to our windows 2003 prod

server and started getting the exception below. Recycling the application on

the webserver seemed to have fixed the problem. Any ideas on why we got this

error?



Message: System.Web.HttpException: External component has thrown an

exception. --->System.Web.HttpCompileException: External component has

thrown an exception.

at

System.Web.Compilation.BaseCompiler.ThrowIfCompilerErrors(CompilerResults

results, CodeDomProvider codeProvider, CodeCompileUnit sourceData, String

sourceFile, String sourceString)

at System.Web.Compilation.BaseCompiler.GetCompiledType()

at System.Web.UI.PageParser.CompileIntoType()

at System.Web.UI.TemplateParser.GetParserCacheItemThroughCompilation()

--- End of inner exception stack trace ---

at System.Web.UI.TemplateParser.GetParserCacheItemInternal(Boolean

fCreateIfNotFound)

at System.Web.UI.TemplateParser.GetParserCacheItem()

at

System.Web.UI.TemplateControlParser.CompileAndGetParserCacheItem(String

virtualPath, String inputFile, HttpContext context)

at System.Web.UI.TemplateControlParser.GetCompiledInstance(String

virtualPath, String inputFile, HttpContext context)

at System.Web.UI.PageParser.GetCompiledPageInstanceInternal(String

virtualPath, String inputFile, HttpContext context)

at System.Web.UI.PageHandlerFactory.GetHandler(HttpContext context,

String requestType, String url, String path)

at System.Web.HttpApplication.MapHttpHandler(HttpContext context, String

requestType, String path, String pathTranslated, Boolean useAppConfig)

at

System.Web.MapHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute()





2) We also got a different error on one of the pages:



CS1595 'XXX' is defined in multiple places: using definition from

"C:\windows\microsoft.net\framework\v1.1.4322\Temporary ASP.net......"



which also got "fixed" after recycling the application.



Thanks!


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Scott

Registered User

Mon Mar 14 12:00:03 CST 2005

Re:External component has thrown an exception

Other than saying there was a compile error in your ASPX page it hard

to tell. Did it show you the code generated for the ASPX page?



If this is an intermittent problem that comes and goes i'd be very

concerned.



--

Scott

www.OdeToCode.com/blogs/scott/">www.OdeToCode.com/blogs/scott/



On Mon, 14 Mar 2005 07:53:01 -0800, "STech" <stech@nospam.nospam>

wrote:



Quote
1) We did an xcopy of our latest production build to our windows 2003 prod

server and started getting the exception below. Recycling the application on

the webserver seemed to have fixed the problem. Any ideas on why we got this

error?



Message: System.Web.HttpException: External component has thrown an

exception. --->System.Web.HttpCompileException: External component has

thrown an exception.

at

System.Web.Compilation.BaseCompiler.ThrowIfCompilerErrors(CompilerResults

results, CodeDomProvider codeProvider, CodeCompileUnit sourceData, String

sourceFile, String sourceString)

at System.Web.Compilation.BaseCompiler.GetCompiledType()

at System.Web.UI.PageParser.CompileIntoType()

at System.Web.UI.TemplateParser.GetParserCacheItemThroughCompilation()

--- End of inner exception stack trace ---

at System.Web.UI.TemplateParser.GetParserCacheItemInternal(Boolean

fCreateIfNotFound)

at System.Web.UI.TemplateParser.GetParserCacheItem()

at

System.Web.UI.TemplateControlParser.CompileAndGetParserCacheItem(String

virtualPath, String inputFile, HttpContext context)

at System.Web.UI.TemplateControlParser.GetCompiledInstance(String

virtualPath, String inputFile, HttpContext context)

at System.Web.UI.PageParser.GetCompiledPageInstanceInternal(String

virtualPath, String inputFile, HttpContext context)

at System.Web.UI.PageHandlerFactory.GetHandler(HttpContext context,

String requestType, String url, String path)

at System.Web.HttpApplication.MapHttpHandler(HttpContext context, String

requestType, String path, String pathTranslated, Boolean useAppConfig)

at

System.Web.MapHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute()





2) We also got a different error on one of the pages:



CS1595 'XXX' is defined in multiple places: using definition from

"C:\windows\microsoft.net\framework\v1.1.4322\Temporary ASP.net......"



which also got "fixed" after recycling the application.



Thanks!





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Scott

Registered User

Mon Mar 14 12:39:28 CST 2005

Re:External component has thrown an exception

It sounds like the running application forgot to recycle once new files were

copied over the old ones. I've seen this happen before but I have no idea

what causes it.

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v-schang

Registered User

Tue Mar 15 00:14:54 CST 2005

Re:External component has thrown an exception

Thanks for Both Scotts' suggestions.



Hi Stech,



Regarding on the symptom you described, I've searched for some former

issues which has the similiar problems. And one possbile cause is that when

we use xcopy to update (or deploy) web application's components( assemblies

in private bin folder), the old ones be replaced which cause the asp.net

application be restarted. Also, at the same time, the asp.net will request

the new assemblies so as to compile new dynamic components. However, if the

updated assemlies's count are huge, it may take some times to finish which

cause the components assemlies be locked by some external process such as

xcopy.exe. Then, some unexpected exceptions occurs.



Will the problems occur again if you have restart your IIS (also clear the

ASP.NET temporary dir)? Also, you can test by do the xcopy work repeatedly

to see whether the problems always occur when we do xcopy, if so, the

problems is likely caused by the one I mentioned above.



Thanks,





Steven Cheng

Microsoft Online Support



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