Sep 11, 2011 12:15 PM|p3tar|LINK
Integrated Pipeline is the default mode for ASP.NET 4.0 and IMO it's a better mode, but for start use the same mode you are using localy... and for the
correctness of code in your HTTP handler declaration, add name of the assembly after the namespace, as suggested earlier..
<add name="Thumb" verb="*" path="Thumb.axd" type="Manic.Controls.ThumbHandler, ASSEMBLY_NAME" />
Also, you should contact your hosting provider about this problem...