Hello,

TIA for your help. I am using the AJAXUploader control in an ASP.Net 2.0 application running on Windows Server 2003. We recently deployed our application to our staging server and the file uploads work fine for everyone except one person. For this person the file seems to get partially through the upload and then just hang. The size of the file is not an issue (I saw it reproduced with a file that was less than 2KB). There are no error messages and no javascript error indicators in the browser status bar. The progress never advances - it just remains at the initial displayed percentage (for example, 72%). It appears that this person is using the same version of IE 6 as the rest of the team.

There is a global error handler configured in the Global.asax that writes errors to a log. Looking at it I see an entry that may be related to this problem. Here is the log entry:

Exception: FormatException
Message: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
Data: System.Collections.ListDictionaryInternal
InnerException:
TargetSite: Void a(EO.Web.Internal.c8, System.Web.HttpResponse, System.Object)
StackTrace: at EO.Web.Internal.d1.a(c8 A_0, HttpResponse A_1, Object A_2)
at EO.Web.Internal.ai.a(c8 A_0)
at EO.Web.Internal.ai.a(HttpApplication A_0)
at EO.Web.Internal.g7.a(Object A_0, Boolean A_1)
at EO.Web.Internal.ev.a(Object A_0, EventArgs A_1)
at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
HelpLink:
Source: xt34zyv-

System.FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
at EO.Web.Internal.d1.a(c8 A_0, HttpResponse A_1, Object A_2)
at EO.Web.Internal.ai.a(c8 A_0)
at EO.Web.Internal.ai.a(HttpApplication A_0)
at EO.Web.Internal.g7.a(Object A_0, Boolean A_1)
at EO.Web.Internal.ev.a(Object A_0, EventArgs A_1)
at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

It turns out that this problem occurs when the user tries to upload a file from the 'Briefcase' folder. Uploading from any other location appears to work fine. Seems like this might be some kind of permissions issue with that particular system folder.