Add Uploader httpModule to web.config's httpModules list
IIS 6.0 and IIS 7.0 Classic mode<system.web>
<httpModules>
<add name="DotNetGallery.UploadModule" type="DotNetGallery.UploadModule,DotNetGallery"/>
</httpModules>
</system.web>
IIS 7.0 Integrated mode<system.webServer>
<modules>
<add name="DotNetGallery.UploadModule" type="DotNetGallery.UploadModule,DotNetGallery"/>
</modules>
</system.webServer>
Based on IIS running mode, you only need use one of them in web.config
Regards,
Eric