Error Code: -5011 : 0x8000ffff can be displayed when installing.
This error has been reported by a small number of customers.
The error is an Installshield error but we have not been able to track down the cause.
Some customers have reported that running the exe in Windows NT or Windows 2000 compatibility mode was sufficient to allow them to install. To do this, right click on the exe, select properties and then compatibility. Another option is to run in safe mode and then try installing the program.