Having problem, when i debug my webapp.

When i debug my pr?ject, i get the following error:

Error 34 The type or namespace name 'SayfaLinkAdd' does not exist in the namespace 'PageUtil' (are you missing an assembly reference?) C:\Documents and Settings\Administrator\Desktop\e-imza.sanayi.gov.tr\Default\kavsakEgitim.aspx.cs 52 40 C:\...\e-imza.sanayi.gov.tr\

Note : 'SayfaLinkAdd' is the name of my method ( public static string [, ] SayfaLinkAdd(string [, ] yer, string sayfaAd, string sayfaLink) ) in 'PageUtil' class ( public class PageUtil ).

When i right click and hit "Go To Definition", .NET recognizes both the calss and the method. And when i hit Ctrl + Space, .NET again recognizes them  both. However when i degun the projeect, it just throws errors in Error List and never let the project  run. What could be the prob?

Thanks in advance...
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