Hi Simon Hmm, I haven't heard of that issue. Have you been checking which version of Silverlight is installed on each of these machines, to see if there's a common version number across each of them? Silverlight 4 has had various GDR releases (one was just released this week), and maybe it's a particular version with the issue. If so, you can then modify your HTML page that hosts the control to require the client machine to upgrade to a minimum version number from where the problem is solved.
You can check out the GDR release history here: http://www.microsoft.com/downloads/en/details.aspx?familyid=1b7a3205-b5f8-4e20-bf42-792de5923454&displaylang=en to see if the problem has been fixed in a particular release, and Koen Zwikstra (of Silverlight Spy fame) has a diff list for each version which may or may not help: http://firstfloorsoftware.com/silverlight-diff-lists/. Hope this helps... Chris On 17 June 2011 15:39, Simon Hammer <[email protected]> wrote: > ** > > Hi Chris,**** > > ** ** > > Thanks for your suggestion.**** > > ** ** > > We do have a custom pre-loader, but my issue sounds a little bit different > to what you have described. On the affected machines, the problem is not > intermittent ; it occurs every time. We have not experienced the issue on > dev machines ; only come across it in “user land”. The only way I’ve found > to fix it is to un-install Silverlight and re-install, and then the problem > does not re-occur. And it’s not just our site that has the issue. An > affected machine does not load the Silverlight object on the main page of > www.silverlight.net either.**** > > ** ** > > Everything points to a Silverlight install issue, but having found 3 > machines now with the same issue (that I know of) makes me worried about all > those machines that I don’t know of. L**** > > ** ** > > Simon.**** > > ** ** > ------------------------------ > > *From:* Chris Anderson [mailto:[email protected]] > *Sent:* Friday, 17 June 2011 3:29 PM > *To:* **ozSilverlight** > *Subject:* Re: Silverlight object not showing - xap downloading but not > launching**** > > ** ** > > Hi Simon**** > > ** ** > > Do you have a custom preloader (i.e. splash screen), or are you using the > default one? I've personally found that custom preloaders are sometimes > problematic, with similar issues to what you're reporting. There seems to > be a race condition, where if the Silverlight application downloads too > quickly, the Silverlight runtime gets confused with what it should display > (the preloader or the application), and nothing ends up loading. I'm > interested in whether other people have experienced this, as I haven't seen > it reported (I do discuss it in my book Pro Business Applications with > Silverlight 4 though). But then again, sadly few Silverlight developers > actually make the effort to create a custom preloader. I notice this issue > primarily occurs on development PCs, where the application download > generally does happen fast. So if you do have a custom preloader, try > disabling it and see if that solves your problem.**** > > ** ** > > Chris**** > > ** ** > > On 17 June 2011 14:25, **Simon Hammer** <[email protected]> > wrote:**** > > Hi all,**** > > **** > > I have come across an issue on a handful of machines (have at least 3 > examples) where hitting a website containing a Silverlight object, the > object is not being displayed. The symptoms I’m seeing are:-**** > > **** > > - The XAP file is being downloaded but there’s obviously a problem > launching it.**** > - The Silverlight splash screen (loading xaml) is shown while > downloading the xap, but after loading, Silverlight object area is blank. > **** > - A Silverlight fallback page will not be displayed as it’s detecting > that the correct version is installed.**** > - The correct Silverlight version is being displayed on the Silverlight > Configuration screen**** > - The “Application Storage” tab is missing from the Silverlight > Configuration screen**** > - The problem is not confined to a single website. Hitting various > different websites containing Silverlight objects exhibit the same > behavior. > **** > > **** > > We’ve had a user’s machine go from working to not-working without any > changes to the website. This leads me to believe it to be a problem with > the install of a newer version of Silverlight via the “auto-update” process > (as auto update was checked).**** > > **** > > The fix is to un-install Silverlight via Add/Remove programs then > re-install it. However, this is not something that would be done by the > general public accessing the site.**** > > **** > > Has anyone come across this issue before or have any suggestions as to how > I could work-around?**** > > **** > > Cheers,**** > > Simon.**** > > > _______________________________________________ > ozsilverlight mailing list > [email protected] > http://prdlxvm0001.codify.net/mailman/listinfo/ozsilverlight**** > > ** ** > > > ______________________________________________________________________ > This email has been scanned by the MessageLabs Email Security System. > For more information please visit http://www.messagelabs.com/email > ______________________________________________________________________**** > > _______________________________________________ > ozsilverlight mailing list > [email protected] > http://prdlxvm0001.codify.net/mailman/listinfo/ozsilverlight > >
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