IIS6 server error BC31019 trying to run first page of ASP.Net application

[Scotter]

Hi -

I posted this message in the microsoft.public.inetserver.iis group, as well.
I hope someone can help. My client is frantic.

Platform: Windows 2003 Server Enterprise Edition, latest MDAC 2.8

Trying to run this ASP.NET app. It has worked before. No code has changed so
I'm convinced the problem is with some server settings.

When I go to the app via Internet Explorer I get this:

SERVER ERROR IN '/' APPLICATION in red.
_________________________
Compliation Error

Description: An error occurred during the compilation of a resource required
to service this request....

Compiler Error Message: BC31019: Unable to write to output file:
'C:\Windows\Microsoft.Net\Framework\v1.14322\Tempo rary ASP.Net
Files\root\f#######\4f######\rniqebki6.dll': Access is denied.

Source Error: [no relevant source lines]

Source File: vbc: Line: 0

Show Detailed Compiler Output:

c:\windows\system32\inetsrv>
"c:\windows\microsoft.net\framework\v1.1.4322\vbc. exe" /t:library
/utf8output
/R:"c:\windows\assembly\gac\system.web\1.0.5000.0__ b03f5f7f11d50a3a\system.web.dll"
/R:"c:\windows\assembly\gac\system\1.0.5000.0__b77a 5c561934e089\system.dll"
/R:"c:\windows\assembly\gac\system.web.services\1.0 .5000.0__b03f5f7f11d50a3a\system.web.services.dll"
/R:"c:\windows\assembly\gac\system.xml\1.0.5000.0__ b77a5c561934e089\system.xml.dll"
/R:"c:\windows\assembly\gac\system.web.mobile\1.0.5 000.0__b03f5f7f11d50a3a\system.web.mobile.dll"
/R:"c:\windows\assembly\gac\system.drawing\1.0.5000 .0__b03f5f7f11d50a3a\system.drawing.dll"
/R:"c:\windows\assembly\gac\system.data\1.0.5000.0_ _b77a5c561934e089\system.data.dll"
/R:"c:\windows\assembly\gac\system.enterpriseservic es\1.0.5000.0__b03f5f7f11d50a3a\system.enterprises ervices.dll"
/out:"C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\ Temporary ASP.NET
Files\root\f94d4f82\4f46420a\miqebki6.dll" /debug-
/win32resource:"C:\WINDOWS\Microsoft.NET\Framework\ v1.1.4322\Temporary
ASP.NET Files\root\f94d4f82\4f46420a\miqebki6.res"
"C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\Temp orary ASP.NET
Files\root\f94d4f82\4f46420a\miqebki6.0.vb"

Microsoft (R) Visual Basic .NET Compiler version 7.10.6001.4
for Microsoft (R) .NET Framework version 1.1.4322.2032
Copyright (C) Microsoft Corporation 1987-2002. All rights reserved.

vbc : error BC31019: Unable to write to output file
'C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\Temp orary ASP.NET
Files\root\f94d4f82\4f46420a\miqebki6.dll': Access is denied.

I have given the following accounts on the 'C:\WINDOWS\Microsoft.NET\' (and
all folders below it) full control:
- Administrators (group)
- ASP.NET Machine Account
- IIS_WPG
- IUSR_machinename
- IWAM_machinename
- Network
- Network Service
- System
- Windows Media Services Guest Account

I've also made sure server extensions has ASP.Net enabled.

Any ideas? (and yes, I've searched google all day with no solution)

Thanks,
Scott