Hello all,
I need help with something. I finished one side of my map, and now i want to make the other side exactly the same. I pressed "i" to select all the models, and textures, and then i press space, when the copy is there i will rotate it so that the other side face the other. But when i do this my Radiant crashes... so i dont know now how to make the other side! Do it one per one?
Help pls...
Thx :)

Try pressing ctrl and C then ctrl and v, to see if it makes a difference. If not try copying and pasting it into a new map file then try the space bar method.

Yes you may have to do it bit by bit.

It could be (although not limited to):

Your selecting way to much for your computer to handle.

or

When you press I its also selecting a corrupted brush or patch (compiling and checking the log usually finds errors like that)

Like techno2sl said, Do the terrain first, then some buildings, etc.

i did it one per one... it was all fine, except that some textures got bigger, some kind of unit change. But i fix it...
Yhx for help :)