I have the following code

if(CDate(DtpCCValidUpto.text)<Now()) Then
   MessageBox.Show ("Invalid date.")  
   DtpCCValidUpto.Focus()
   Return
endif

i ran the program and in a form enter the date in a DateTimePicker
and the following message appears

No controled Exception 'System.InvalidCast.Exception' in microsoft.visualbasic.dll
Aditional Information: "The convertion of the string 04/22/2006" to Date is not Vaild


How can i solve that?
Thank you
Luis Martin