Upgraded all users to Macola ES 9.6.400 and all but one worked. On this one particular computer when you click on the Macola icon I get a message: "Run time error 2147467261 (80004003) Automation error library not registered." If I click on the icon and "Run as-administrator" it will work. It seems to be some kind of permission error, but the individual has Administrative rights on his computer.