Based on the provided information it is rather difficult to isolate the root cause of the issue.
there are some basic steps you could take for isolating the issue:
- Check if any js errors appear on Ajax request when the application is deployed on the live server.
- In case you are tuning the application in medium trust ensure that you are inheriting from RadAjaxPage as described in the following help topic: Using RadAjax in Medium Trust
- In case you are using a centralized MasterPage with the ScriptManager on it ensure that the same MasterPage is deployed on the server.
DevCraft Q1'14 is here! Join the free online conference to see how this release solves your top-5 .NET challenges. Reserve your seat now!