Nothing like an “Absolutely useless error message” post from Ian Steward to make your day. Take a look at Bad or missing data was encountered while loading the report for some more MR info.
Bad or missing data was encountered while loading the report – Management Reporter | DynamicsGP.ie
Archived post from 2014. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.