Error message displaying when opening DGN file from ProjectWise
An error message of this nature is usually related to the Integration of ProjectWise Explorer Client with the current installation of MicroStation.
One method to resolve this error would be by uninstalling and reinstalling ProjectWise Explorer. This seems to repair the integration problem between the two products.
Another would be by Disabling ProjectWise Integration.
MDL Loader error when launching OpenRoads Designer from ProjectWise
Error cannot load mcm dll when launching dgn from ProjectWise
ProjectWise Version Support Matrix