Hello Tom Bushell,
we are believing meanwhile this is a general issue with the new OSX version "El Captain".
Like the last link stated here
https://brightrockgames.userecho.com/topic/1084024-game-not-working-in-fullscreen-mode-os-x/
It seems there is some issue with their display modes.
Such issues were not seen in versions before "El Captain".

I hope that Apple is patching this in the near future.

Hello Gigi Miner,
as far as I can see this was a temporary issue with a hotfix we released.
It was only happening for a few hours until we spotted, fixed and patched it.

So it should work now correctly again.
Please let us if not.

Cheers

So I even played the map my self to the point where I claimed the "central corridor".
Despite this map being almost unplayable because of too many objects placed causing lag,
I was able to claim the center without any issues.

Or isn't this the "central corridor" you were talking about?

Hello Julianb3000,
any chance that the tiles in the center have hidden Blade Loti on them?
This makes workers avoiding these tiles, until you rally units on that tile which makes the Blate Lotus pop out.
I might take a look at this map as well.

Cheers

If you switch to anything equal or higher to windows 7 64bit you should be fine.
A 64bit OS is important, if you want to be able use over 3.5 GB.

Cheers

Uhhh this looks really messy.
I have never seen something like this so far and I am pretty sure this will not happen on every map as we tested this feature on multiple.

Which map is it? Can it be found on Workshop?
Did you encounter this on any other map as well?

Can you restart the game, import it again to trigger the problem and then once it occured, quit the ggame and upload your output_log.txt,
like specified here https://forum.subterraneangames.com/threads/please-read-how-to-report-a-bug.4689/
It's important to always grab the log before restarting the game after a problem occured, because it will be recreated on each launch.

There must be anything going utterly wrong which caused the problem.
The log might allow us to figure out what it was.

Cheers

There are quite some other useful improvements as well.
Have fun! :)

Seems it could well be an issue with your OSX version:
https://discussions.apple.com/thread/7359797?start=0&tstart=0

Ohhh then I guess it was actually an issue with the import UI and not the import function.
I was wondering because it should not be possible that there is a map preview on the right side while no map is actually highlighted in the list, but this was happening in your screen shot.

I am glad that it works now for you! :)

Hello Rax,
I am unsure what the problem is actually, can you add some more details?
And if you wouldn't mind, could you make a screen shot?
Right now I can only guess what this report is about.