What, no RESSCI.000? You need to rename that too (to RESOURCE.000).
OK. I did not rename the actual resource volume as without knowing about the workings of the map file I assumed that it would be looking for RESSCI.000. Even though Companion was not intended for these later games, this is one change that would be nice to have; to allow Companion accept the different naming conventions.
Yeah, being able to accept other naming conventions would be a good idea. There's also the Macintosh SCI1.1 and SCI32 games, which use yet another naming convention - the resource files are labeled "Data1", "Data2", etc. From what I can tell by looking at them in ResEdit, they store all of the resources in their resource fork, and they have no data fork.
While neither Companion nor SCI Resource Viewer can open these resource files, ScummVM can, so it can play those games.