We had a similar problem on one of our reports and had to run a built in utility to fix it; I remember seeing several such utilities all having a 4 digit ID code. On vacation at the moment so I can't research this right now but hoping this provides some insight so someone else may be able to fill in the blanks, so to speak. Support gave us this info but it took going through several clueless reps to get to one (I believe here in the states) that immediately knew what to do to resolve the problem. The issue occurred when someone tried to post a negative transaction on a job IIRC (Vantage 6.10).
Can somebody explain why our WIP reports displays "?" in the material field and the total material field?