make sure you have re-compiled (you know what i mean) the new entity list into the map. if there are no changes at all, I'd start looking at what set up you've got for RipEnt, and also whether you're changing the values properly.
what are you testing the map on? 1.5 or 1.6?
you need to put the .bsp in your maps folder (lol, clutching at straws
)
finally, make sure you haven't altered the position of the entity (so that it dissapears into a wall or something) and check how many light_environments there are in the map, some of the older cs maps weren't compiled using the zhlt tools, so there are more entities.