I havent used the SDK/Hammer for 2 month, and when I started it today, there was only one windows, the front view! No matter which map I open, or if I restart hammer, or if I verify SKD/Portal cache, it stays the same, and I cant find any option in view or window menu, to show all 4 view (3d + top + left + front)

Any idea?

No idea but I found this:

Quote:
Go into Tools --> Options --> General --> Windows Setup --> Use independant window configuration

Toggle the checkbox and restart.

http://forums.steampowered.com/forums/s ... p?t=619786

Does it help?

I always click [Ctrl+A]
this may help idk https://developer.valvesoftware.com/wik ... _Reference

those just reset/rearrange the 4 view, only works if all 4 visible. Tried ctrl+a and shift-z (I use the later a lot) but nothing.
Messed around with Hammer's registry settings and finally fixed it
( HKEY_CURRENT_USER\Software\Valve\Hammer\Splitter )

thats messed up, but cool that you got it back