I recently upgraded to SS4 and noticed that one of my referenced DGN files was not found, i.e. red. I just tried to open the DWG with V8i SS4 and it gives an error message that it is not a recognized file format. I did not have any issue opening this file with SS3. Is it worth tracking down an answer, or should I just go back to using SS3?
In Windows, can you go to Control Panel>Programs & Features>Uninstall a Program and see if you have the program 'Bentley V8i (SELECTseries 4) - Autodesk RealDWG 2016'? If it isn't there, then you need it in order for SS4 to read all DWG files. You can download RealDWG from our Software Fulfillment page here:
http://select.bentley.com/FulfillmentCenter/en/Search/Product/LTEyMzE5NjgyOTdfNC4wLjIuMA
Cheers,
Erik M.
RegardsAndrew BellTechnical SupportBentley Systems