I just created this program 2 weeks ago, and stop doing for two weeks... before, it perfectly run and has no errors on all of my instance variable that i declared, though in is not finish...

When I'm about to continue doing my project, this error suddenly appear,... Even my 'StrSQL' variable which I declare in my Module as follow:

Code:
Public strSQL as String
and upon calling the variable it also has that error... same with this declarion inside my modGlobal module,

Code:
    Public RoomWindow As New frmRoomWindow
    Public AccountReceivable As New frmAccRecLookUp
    Public GuestLookup As New frmGuestLookup
    Public ReservationLookup As New frmReservLookup
    Public AlterData As New frmAlterData
    Public Checkin As New frmCheckIn
    Public ManageAccount As New frmManageAccounts

    Public ucButton As New ucAA_Button
    Public usermain As New ucUserInformation
    Public room As New ucRoom
    Public paymenttype As New ucPaymentType
    Public idtype As New ucIDType
    Public customer As New ucCustomer
    Public company As New ucCompany
    Public charges As New ucChargeType
    Public accountrecord As New ucAccountRecord
All of them suddenly has that error,...

What would be the problem with this?... I'm stock with this problem...
Does my Visual Studio 2008 has the problem?