Problem installing COB

When I try to install a message box pops up as follows

Cannot download the application.
The application is missing required files.
Contact application vendor for assistance.

Here is a printout of the log file

PLATFORM VERSION INFO
Windows : 6.0.6001.65536 (Win32NT)
Common Language Runtime : 2.0.50727.3074
System.Deployment.dll : 2.0.50727.3053 (netfxsp.050727-3000)
mscorwks.dll : 2.0.50727.3074 (QFE.050727-3000)
dfdll.dll : 2.0.50727.3053 (netfxsp.050727-3000)
dfshim.dll : 2.0.50727.3053 (netfxsp.050727-3000)

SOURCES
Deployment url : http://download.comodo.com/cob/download/Comodo.Backup.application
Server : nginx
Deployment Provider url : http://download.comodo.com/cob/download/Comodo.Backup.application

ERROR SUMMARY
Below is a summary of the errors, details of these errors are listed later in the log.
* Activation of http://download.comodo.com/cob/download/Comodo.Backup.application resulted in exception. Following failure messages were detected:
+ Downloading http://download.comodo.com/cob/download/Comodo.Backup.application did not succeed.
+ The remote server returned an error: (404) Not Found.

COMPONENT STORE TRANSACTION FAILURE SUMMARY
No transaction error was detected.

WARNINGS
There were no warnings during this operation.

OPERATION PROGRESS STATUS
* [12/08/2009 12:38:51] : Activation of http://download.comodo.com/cob/download/Comodo.Backup.application has started.

ERROR DETAILS
Following errors were detected during this operation.
* [12/08/2009 12:38:54] System.Deployment.Application.DeploymentDownloadException (Unknown subtype)
- Downloading http://download.comodo.com/cob/download/Comodo.Backup.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.DownloadManifest(Uri& sourceUri, String targetPath, IDownloadNotification notification, DownloadOptions options, ManifestType manifestType, ServerInformation& serverInformation)
at System.Deployment.Application.DownloadManager.DownloadDeploymentManifestDirect(SubscriptionStore subStore, Uri& sourceUri, TempFile& tempFile, IDownloadNotification notification, DownloadOptions options, ServerInformation& serverInformation)
at System.Deployment.Application.DownloadManager.FollowDeploymentProviderUri(SubscriptionStore subStore, AssemblyManifest& deployment, Uri& sourceUri, TempFile& tempFile, IDownloadNotification notification, DownloadOptions options)
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, String textualSubId, String deploymentProviderUrlFromExtension, BrowserSettings browserSettings, String& errorPageUrl)
at System.Deployment.Application.ApplicationActivator.ActivateDeploymentWorker(Object state)
--- Inner Exception ---
System.Net.WebException
- The remote server returned an error: (404) Not Found.
- 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.