this._pagerequestManager is null or not an object

If you run into the JavaScript exception while attempting to add AJAX.net animations to your controls there is a setting in your web.config that you need to update. Open your web.config and locate the tag

<xhtmlConformance mode="Legacy"/> and replace with <xhtmlConformance mode="Transitional"/>.

Published by

Tim Clark

Experienced Business Owner, Chief Information Officer, Vice President, Chief Software Architect, Application Architect, Project Manager, Software Developer, Senior Web Developer, Graphic Designer & 3D Modeler, University Instructor, University Program Chair, Academic Director. Specialties: Ruby, Ruby on Rails, JavaScript, JQuery, AJAX, Node.js, React.js, Angular.js, MySQL, PostgreSQL, MongoDB, SQL Server, Responsive Design, HTML5, XHTML, CSS3, C#, ASP.net, Project Management, System Design/Architecture, Web Design, Web Development, Adobe CS6 (Photoshop, Illustrator)

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