This is the first time I'm trying to compile my map but I keep getting an error when creating the bsp.

This is my compiler setup and error:
https://ibb.co/gaWY1G

I copied the 64bit compiler and dll files from my gtkradiant 1.6 installation. I didn't want to try the newer separate compilers and start simple with the existing one.

Does anyone know what I'm doing wrong?

Thanks on advance :) 

Looks like your paths are all messed up but hard to see everything in your screenshot. Looks like you have spaces, periods and weird characters and it could be that.

Some advice:

Under Quake make a new directory called "compile".
Download ericw's compile tools here: http://ericwa.github.io/ericw-tools/

Download Necros' compiling GUI here: https://shoresofnis.wordpress.com/utilities/ne_q1spcompilinggui/

Install ericw's entire folder into your new compile directory.
I think you can put Necros' GUI anywhere you want. Instructions are on the page linked above.

Now you have two options to compile. I suggest Necros' GUI for beginners. Try it. If you'd rather use TB then set up the paths in this new. compile directory.

There's a bunch of things that could have gone wrong with your current setup. Best to start from scratch. ericw's compilers work perfectly with default settings, they are backwards compatible and more up to date than what you have. 

Okay thanks, I'll give it a go 

Just a quick question, is this compiler also for Quake 2 ?? 

but can do Hexen2

read the qbsp documentation

https://ericwa.github.io/ericw-tools/ 

I know Doom 3 isn't as popular as Half-life or Quake but it's still really fun to map for and I like Trenchbroom much more than the alternatives. Is there any glimmer of hope that we will ever get support for Doom 3? 

TB saves to .map. Make as much as you'd like in TB. Save it. Open in your Doom3 radiant editor. Texture and fill with items/enemies. Compile. 

Sounds like a rather nasty workflow honesly :/

It would be nice if the author of trenchbroom would clear it up if Doom 3 support is something we will ever get and if not then the reason he doesn't care to include it. 

I wouldn't expect him to, at least for a good long while. He has a long list of features he's talked about implementing for Quake that I'm sure he is more interested in working on for now. 

Any examples of the new exiting features that are coming for Quake? 

You can check out the milestones at Github here:

https://github.com/kduske/TrenchBroom/milestones

Right now they are working on 2.0.0 and it looks like 2.1.0 is chugging along. 

I'm sorry, but it's not actively being worked on ATM. I'm very busy with other things and have too little time to work on TB as it is. Also other games have precedence, e.g. before I would start working on D3 support, I'd want to work on Q3 and HL2. 

Hi!

When I change a point entity's classname to trigger_secret and then deselect the entity, the entity stops displaying in the editor. The entity still exists in the map, because it compiles and gets triggered during gameplay.

Is anyone else able to reproduce the behavior? 

Check your View menu checkboxes. This sort of thing has happened to me before and this was the culprit.

Alternatively, I seem to recall something familiar about this so it could be a known issue. Do the above check to rule that out. 

I think what you described is this bug, which is already fixed for the next release:
https://github.com/kduske/TrenchBroom/issues/1805 

That's probably it, ericw. Glad that it's accounted for.

On another, somewhat similar note: I've made some groups, but there don't seem to be any checkboxes in the view menu to hide groups. Instead I have to first select them and use the hide tool, which isn't as convenient.

Is there an easy way to hide groups in RC4 or will it be implemented in version 2.0? 

I don‘t see much value in blanket hiding all groups. This is not their purpose. 

Being able to hide the TrenchBroom groups has value.

Sometimes I want to manipulate a large group of entities at once(lights for example). To do this I turn off visibility for everything but that one entity type i wish to change.

If i have TB groups, I have to first hide EVERYTHING, this leaves the TB groups visible, then I ctrl+A to select everything, hide the TB groups, then I turn on visibility for the one entity type I wish to see/change. 

https://imgur.com/fAzSK68

for clarity, were talking about hiding them with this menu. 

Nice workaround, mukor! :) It would still definitely be a lot more convenient if the groups were possible to be hidden with a simple checkbox. 

Is it just me, or is there no way of removing individual brushes from groups in RC4? The only options I have when right-clicking a single brush within a group are

Group
Ungroup [unclickable]
Rename [unclickable]
Add Objects to Group [some other group]
______________
Create Point Entity
Create Brush Entity
Move Brushes to World

"Move Brushes to World" used to do the trick in earlier versions of TB (albeit at the cost of turning all selected brush entities to world brushes); it no longer works. Shouldn't there be a "Remove Objects from Group [selected group]"? 

Hmm, it works for me in RC4.
I am 'inside' a group (double-clicked on it). The group has 2 worldspawn brushes, I select one, right click, and have the option: "Remove Objects from Group Unnamed". Selecting that moves it outside the group, turning it blue.
Can you get reproduce this?

"Move Brushes to World" is only for moving things from "func_" entities to worldspawn, it doesn't affect group membership. This was different pre-RC4 , see: https://github.com/kduske/TrenchBroom/issues/1744 

Where you right click (selected brush you wish to remove from group vs. other objects).