What happens is that when handling the onload event of a gadget's settings page, System hasn't been loaded yet (thus the System undefined error). So there is no way to properly initialize the settings page's html Controls using the negpoz.comgs object. Jul 24, · hello. Sys undefined means that you're not getting the client side files loaded on your browser. btw, windows server is supported. if you searh this forum, you'll find a post by a team member where he says that the docs are wrong about that. I have a weird issue that only seems to be affecting IE 7. The web site is a c# negpoz.com website that utilizes ajax and the ajax control toolkit deployed to a win server. Everything appears to be correct in the negpoz.com In fact, everything works perfectly in IE6 and Firefox 3. It is only in IE7 that I get the dreaded sys is undefined.