another bug same map

You have a brush entity that attempts to reference a brush that doesn't exist. Edit out the broken entity in the vmf manually.

Probably means you have too many brush models in your map. If you use a certain brush over and over again, try making the brush a model with Propper or similar and use props instead.

by the way. Judging for the screenshot, I'm suspecting you are making a beginner mistake. Do you work with a grid size of 1 or do you have snap-to-grid disabled? Because it looks like your brushes are just slightly off bigger grid sizes which implies that said mistakes are the case.
Try to work with a bigger grid until you make details. A good grid size to start when making more basic things like layout is 8 or 16. Also brush vertices should always be on the grid.
If you have plenty of offgrid brushes or always work on grid size 1 then mapping will be more unorganized by a clustered view, inconvinient to edit brushes and can cause technical issues.

But maybe I'm just missjudging you from that screenshot. It's just a guess

Qbus said:

thank you.
dr orange i taught there was no limit for brush

Click to expand...

There certainly is a limit on the number of brushes. Lots of things have hardcoded limits in source.

It would really help if you explained what you were trying to do or what weird logic you are trying to use because this is seldom an error a normal map would have.