When this occurs and the map is loaded in-game, the user will get the error sv_setBrushModel: null. My primary issue with Radiant 1.5 is that it is bugged and can create brushless entities in the map, and the user won't know until they have already compiled it, which is frustrating and a total waste of time (Back in the day, compiles took hours). Here's a screenshot of it from years ago: It's still the buggiest thing in 1.4, 1.5 and 1.6. I think the vertex editor in 1.5 was also a bit better than 1.4, but just barely. Specifically what is missing in Radiant 1.6? I think the free rotate tool was missing, but was there anything else? I never really used 1.5 much. Not to derail the thread - but I'm honestly curious, and since this was a hot topic on filefront back in the day, I figure some civil discourse may be helpful. But once it actually works to use, it's so much better IMO. I never had bugs with 1.5 except on certain. The G-Wing map we released was made with 1.6 and it made me want to hang myself. 1.6 was cancer to me, there's so many missing features that I can't fathom how it is actually called 1.6.

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