P6 carat symbol

hi all,

most threads that i have read on price/unit having a carat symbols seem to suggest that this happens only when you do not have a price/unit. On the programme i am working on however, the price/unit has been allocated and still all but one resource shows the correct remaining costs.  I have tried adding the rates again and recalculating assignment costs, this does not seem to work.

Is there any other way to get the programme to re-calculate without having to re-do the resources

best regards,