URI formats are not supported?

Hi,

Sometimes when I try to run a XBAP application, I get the following
error (see below). Usually, when I clean the application and the
rebuild, the error goes away.

What could it be?

Startup URI: http://laptop/wpf-permissions/WinFxB...lication4.xbap
Application Identity:
http://laptop/wpf-permissions/WinFxB...n4.application,
Version=1.0.0.0, Culture=neutral, PublicKeyToken=acdb713fbf02b9d4,
processorArchitecture=msil/WinFxBrowserApplication4.exe,
Version=1.0.0.0, Culture=neutral, PublicKeyToken=acdb713fbf02b9d4,
processorArchitecture=msil, type=win32

System.ArgumentException: URI formats are not supported.
at System.IO.Path.NormalizePathFast(String path, Boolean fullCheck)
at System.IO.Path.GetFullPathInternal(String path)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess
access, Int32 rights, Boolean useRights, FileShare share, Int32
bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String
msgPath, Boolean bFromProxy)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess
access)
at
System.Windows.Interop.ApplicationLauncherXappDebug.GetIdFromManifest(String
manifestName)
at
System.Windows.Interop.ApplicationLauncherXappDebug.GetApplicationIdentity()
at System.Windows.Interop.ApplicationLauncherXappDebug.Initialize()
at
System.Windows.Interop.DocObjHost.MS.Internal.AppModel.IBrowserHostServices.Run(String
path, String debugSecurityZoneURL, String viewerUri, String fragment,
String applicationId, MimeType mime, Object streamContainer, Object
ucomLoadIStream, Boolean isDebugMode, Boolean isAvalonTopLevel, String
progressAssemblyName, String progressClassName, String
errorAssemblyName, String errorClassName)

Greetings,
Laurent
--
Laurent Bugnion, GalaSoft
Software engineering: http://www.galasoft-LB.ch
Private/Malaysia: http://mypage.bluewin.ch/lbugnion
Support children in Calcutta: http://www.calcutta-espoir.ch