I am unable to resolve a problem that is preventing any of the Update buttons from responding. When I run the debugger in IE I'm getting this error: 'WebForm_DoPostBackWithOptions' is undefined. This is a recent problem only on our production server, the same site on our development server is not affected. When I inspect the Update button element I notice missing code when compared to the test site.

The code from the production site:

<li>
<a title="Update" class="dnnPrimaryAction" id="dnn_ctr387_ModuleSettings_cmdUpdate" href=' WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions("dnn$ctr387$ModuleSettings$cmdUpdate", "", true, "", "", false, true))'>Update</a></li>

The code from the dev site:

<LI sizset="165" sizcache06695674871246398="28"><A id=dnn_ctr387_ModuleSettings_cmdUpdate title=Update class=dnnPrimaryAction href=' WebForm_DoPostBackWithOptions(new WebForm_PostBackOptions("dnn$ctr387$ModuleSettings$cmdUpdate", "", true, "", "", false, true))' jQuery17206370455627942873="100">Update</A>

The production site doesn't make any reference to the cache or jQuery. I have seen references online to turning off caching but I cannot Update any site configs due to this problem.

The site was working last month and there have not been any changes to IIS or the site since. Any help would be greatly appreciated.

Thanks for the tip, it was the WebResource.axd Handler Mapping config. Somehow the Request Restrictions were set to invoke handler only if request is mapped to file, once that was unchecked the problem was resolved. The proper config is shown below.

Thanks again for the help.