This article applies to:
This bug has been fixed in E-Prime 1.2.
During runtime, any calls to AskBox or MsgBox work properly, minus the ability to use the mouse.
This is because the Mouse cursor is hidden by default. Use the Mouse.ShowCursor function prior to calling the input functions. Remember to use Mouse.ShowCursor to hide the mouse if applicable after the AskBox, etc. call in the script.
Update to E-Prime 1.2 or later.