Unfortunately for your customer, the Academic Timetable solutions was designed for use in an English-language environment. Advansys does not plan to add multilingual support to the solution at this time. In addition, this product is likely to be removed from the Advansys catalogue in the near future.
As for the “incomplete installation” problem, this probably is because the installer for Academic Timetable is quite old now, and incompatible with the licensing model in Formativ 2.0.1.
If you have any further enquiries on this matter, please do not hesitate to ask.