Could not detect a valid SDK with version '6' or higher

Hi, after a long day of setup working try this way:

I have a fresh Titanium Studio (Titanium Studio, build: 3.4.1.201410281727) with a fresh installed XCode (Version 6.1.1.) on Yosemite (10.10.1).

The Studio doesn't find the right SDK. I have tried

sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer

sudo xcode-select --reset

iOS Issues
  !  There are no supported Xcode installations found.

mymac:~ fuerst$ ls -la /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/
total 8
drwxr-xr-x  4 root  wheel  136  5 Jan 15:36 .
drwxr-xr-x  5 root  wheel  170 17 Nov 19:14 ..
drwxrwxr-x  8 root  wheel  272 14 Okt 11:07 iPhoneOS.sdk
lrwxr-xr-x  1 root  wheel   12  5 Jan 15:33 iPhoneOS8.1.sdk -> iPhoneOS.sdk
eLBMIN-MBP4:~ fuerst$

Rainer