An ERP system does not always work like it should. Plastic producer Hyplast experienced that at first hand. Amongst others, the slowness of their system was a cause for great frustration for the employees. Hyplast decided to do a performance tuning together with software specialist Invantive. It allows errors to be filtered out of the system in a relatively short amount of time. After a system crisis at Hyplast in 2004, the Invantive solution, Invantive Melba, is now used to monitor the system as well. Louis Thirion, IT manager for Hyplast, is very happy with the system optimalization, but also realizes at the same time that the performance tuning is only a bandage on the wound for Hyplast.