Nice, it works fine now!
Thank you for the fast help!

PUSH
Can any developer answer me?

My client worked always fine, but since the update 10.8.X my client crashes on startup...
The MacOS Error report wrote the following text:

Crashed Thread: 0

Exception Type: EXC_BREAKPOINT (SIGTRAP)
Exception Codes: 0x0000000000000002, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY ...