Following the update to the July 2013 release (v4.1.7.725), I have found that the script resource files for my custom extenders are not being loaded. In addition, it seems that the script resource files for ALL AjaxControlToolkit controls are being loaded (not just the ones on my page).
I've probably missed something simple somewhere, but literally doing nothing but dropping back to v4.1.7.607 (June 2013) fixes both problems.
I've probably missed something simple somewhere, but literally doing nothing but dropping back to v4.1.7.607 (June 2013) fixes both problems.