Monthly Archives: July 2008

Sys.WebForms.PageRequestManagerServerErrorException: 500

Posted on by rick schott

Sys.WebForms.PageRequestManagerServerErrorException:An unknown error occured while processing the request on the server.The status code returned from the server was:500 The real error was:Invalid postback or callback argument. Event validation is enabled using;<pages enableeventvalidation=”true”/>; in configuration or ; in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the [...]

Image(img) doesn’t show up on initial page load, FireFox 2.0.0.16

Posted on by rick schott

Here is the tag <img src=”images/exampleLogo.gif” />, what is wrong with it? Well, it depends on the browser and DOCTYPE and CSS being used. In this case I was using FireFox 2.0.0.16 , DOCTYPE http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd and some CSS to center my DIV on the screen. The result was that using the img tag without the [...]