Question : ASP.Net -- add a ScriptManager and get "Failed to load source for: http://localhost:63366/pubwbr /

I've been dealing with this problem all day, ever since I started adding AJAX stuff to my page.

Rolling the code back ... and starting over ... all that's necessary to get it to act up is to add the ScriptManager to the page.

What could the error mean?  The ASPX page is definitely right beside others in the directory that are getting loaded just fine.  And VS2008 isn't complaining about the rebuild.

Thanks!

Answer : ASP.Net -- add a ScriptManager and get "Failed to load source for: http://localhost:63366/pubwbr /

are you using a masterpage?

if yes, and if there is a on ScriptManager  the masterpage you should add a ScriptManagerProxy instead