Hi Jiri,
thank you for your quick answer.
Re-installing SDK didn´t work, but i think i found the problem now.
I completely re-installed Design Studio(+sdk) with the PC administrator and it seems that i didn´t have enough rights as a normal user.
After installation the admin tried to open the examples and it worked, then i tried the same with my user account but it didn´t work.
the admin changed rights for s32 folder, so it works now.
Johannes