@Risk Error: "Can't create Gantt chart using the specified date format in Project."

This message indicates one or more tasks have durations that are too short for @RISK's Gantt chartt It generally occurs when there are defined tasks with a duration less than 1 day. This is not a fatal error. The Gantt chart in Excel is visual, and does not affect the simulation in any way. All tasks are still simulated in MS Project.