Need Macro to Stop and Show Message When Error, or Continue

Hi,
I have a macro that correctly stops and shows a message box when there is an error opening a file (if the wrong password was used). But when the correct password is used, the file opens and the macro stops instead of continuing. Here is what I have:

On Error GoTo ErrMsg
    Workbooks.Open Filename:= _
        "T:\MacroFile.xlsx", Password:=Sheet4.Range("B3").Value
    Range("A1").Select
Exit Sub

ErrMsg:
MsgBox ("The password is incorrect." & vbLf & "Type the correct password in cell B3 and try again."), , "ALERT!!!"

additional macro tasks follow

Any suggestions would be appreciated.

Thanks,

Phillycheese