Can not start Report Builder!

I just setup my dev server of SQL 2005 including reporting service on Windows 2003 SP1. Basically all settings are default.

When I activiate Report Builder from local, it works fine. Everything runs smoothly. However, we I try to run Report Builder from a remote client, which is XP SP2. It always shows me the following error: "Application download did not succeed. Check your network connection, or contact your system administrator or network service provider." I don't think it's about permission issues. I am using the administrator group user. Besides the report builder activiation part, I can browser every part on report server website without error.

Do appreciate your help!!!

Details provided by server are
"PLATFORM VERSION INFO
Windows : 5.1.2600.131072 (Win32NT)
Common Language Runtime : 2.0.50727.42
System.Deployment.dll : 2.0.50727.42 (RTM.050727-4200)
mscorwks.dll : 2.0.50727.42 (RTM.050727-4200)
dfdll.dll : 2.0.50727.42 (RTM.050727-4200)
dfshim.dll : 2.0.50727.42 (RTM.050727-4200)

SOURCES
Deployment url : http://myserver/ReportServer/ReportBuilder/ReportBuilder.application

ERROR SUMMARY
Below is a summary of the errors, details of these errors are listed later in the log.
* Activation of http://myserver/ReportServer/ReportBuilder/ReportBuilder.application resulted in exception. Following failure messages were detected:
+ Downloading http://myserver/ReportServer/ReportBuilder/ReportBuilder.application did not succeed.
+ The remote server returned an error: (500) Internal Server Error.

COMPONENT STORE TRANSACTION FAILURE SUMMARY
No transaction error was detected.

WARNINGS
There were no warnings during this operation.

OPERATION PROGRESS STATUS
* [11/22/2005 10:13:33 AM] : Activation of http://myserver/ReportServer/ReportBuilder/ReportBuilder.application has started.

ERROR DETAILS
Following errors were detected during this operation.
* [11/22/2005 10:13:33 AM] System.Deployment.Application.DeploymentDownloadException (Unknown subtype)
- Downloading http://myserver/ReportServer/ReportBuilder/ReportBuilder.application did not succeed.
- Source: System.Deployment
- Stack trace:
at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next)
at System.Deployment.Application.SystemNetDownloader.DownloadAllFiles()
at System.Deployment.Application.FileDownloader.Download(SubscriptionState subState)
at System.Deployment.Application.DownloadManager.DownloadManifestAsRawFile(Uri& sourceUri, String targetPath, IDownloadNotification notification, DownloadOptions options, ServerInformation& serverInformation)
at System.Deployment.Application.DownloadManager.DownloadDeploymentManifestDirectBypass(SubscriptionStore subStore, Uri& sourceUri, TempFile& tempFile, SubscriptionState& subState, IDownloadNotification notification, DownloadOptions options, ServerInformation& serverInformation)
at System.Deployment.Application.DownloadManager.DownloadDeploymentManifestBypass(SubscriptionStore subStore, Uri& sourceUri, TempFile& tempFile, SubscriptionState& subState, IDownloadNotification notification, DownloadOptions options)
at System.Deployment.Application.ApplicationActivator.PerformDeploymentActivation(Uri activationUri, Boolean isShortcut)
at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state)
Inner Exception
System.Net.WebException
- The remote server returned an error: (500) Internal Server Error.
- Source: System
- Stack trace:
at System.Net.HttpWebRequest.GetResponse()
at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next)

COMPONENT STORE TRANSACTION DETAILS
No transaction information is available.

Silly question, but did you install the .net 2.0 runtime on your client box?|||Yes, .net 2.0 is installed. Even I tried both released one and Beta 2. Both of them do not work.

Weird part is I can launch Report Builder successfully from wireless laptop. But when I connected laptop back to wired network, same error came back. I suspect it's due to network settings.

Any one has the similar problem?|||

Having similar kind of issue. Error summary says this.

ERROR SUMMARY
Below is a summary of the errors, details of these errors are listed later in the log.
* Activation of http://rs.mycompany.com/ReportServer/ReportBuilder/ReportBuilder.application resulted in exception. Following failure messages were detected:
+ Downloading http://rs.mycompany.com/ReportServer/ReportBuilder/ReportBuilder.application did not succeed.
+ Unable to connect to the remote server
+ An established connection was aborted by the software in your host machine

It was working like Champ couple of days back. There has been some firewall policy changes happened between today and day it worked. I am suspecting something to do with firewall. But I am not sure. somebody please help.

Pleaseeee HELP!

Thanks,