I just started my first web application. Everything was fine at first. I set up my .Master page and it looked good. I went to add the first aspx page and it did not offer the option of selecting the master page. I poked around and found out how to add it manually so that was ok. Things went along fine until I added the ninth aspx page. Then suddenly I get 80 plus errors like these two;
Warning 3 Found conflicts between different versions of the same dependent assembly. ATS07
Error 4 Type 'System.Web.UI.HtmlControls.HtmlForm' is not defined. C:\Inetpub\wwwroot\ATS07\ATS07\ATS07.Master.designer.vb 16 35 ATS07
How can the project suddenly not know what system.web is?
How do I fix it??