Director, System Engineering APEX SCIENCE & ENGINEERING CORP. I had been suppose KeyPro error and change it, but the error status keep the same, can you advise me what is the matter? Best Regards J.S. Hi, user list He we suffer a problem on CITECT application, my CITECT application for a Water SCADA applicationhave installed for a duration of several months, however it suffer a bug with Software Protection Failure message and down the system each week, it will be recovered after power restart and then live for a duration. Selecting the best SCADA software requires a consideration of how the system will evolve over the course of 15 years, the typical lifecycle of SCADA systems. SCADA software is a long-term investment in efficiency.