[Mono-list] error on viewstate

[Daniel Soto]

Hi All.

Sorry for boring :-)

I have a problem. In an aspx page, when i click on a button which 
perform an action, but remains in the same page (for example, in a 
validation on the server that not pass the test, then appears an message 
in the validationsummary), and after, click the button a second time, an 
error occurs

//Index is less than 0 or more than or equal to the list count. 
Parameter name: index 1//

Here is the complete stacktrace

System.ArgumentOutOfRangeException: Index is less than 0 or more than or equal to the list count.
Parameter name: index
1
  at System.Collections.ArrayList.get_Item (Int32 index) [0x00000] 
  at System.Web.UI.WebControls.ListItemCollection.get_Item (Int32 index) [0x00000] 
  at System.Web.UI.WebControls.ListControl.LoadViewState (System.Object savedState) [0x00000] 
  at System.Web.UI.Control.LoadViewStateRecursive (System.Object savedState) [0x00000] 
  at System.Web.UI.Control.LoadViewStateRecursive (System.Object savedState) [0x00000] 
  at System.Web.UI.Control.LoadViewStateRecursive (System.Object savedState) [0x00000] 
  at System.Web.UI.Control.LoadViewStateRecursive (System.Object savedState) [0x00000] 
  at System.Web.UI.Page.LoadPageViewState () [0x00000] 
  at System.Web.UI.Page.InternalProcessRequest () [0x00000] 
  at System.Web.UI.Page.ProcessRequest (System.Web.HttpContext context) [0x00000]

Someone to know about this? How can i to fix this?

Thanks.

Best regards.