Kdenlive crashes when i trying to separate sound and video

Using Kdenlive 0.8.1 on Kubuntu 11.10
Kdenlive crashes every time i try to seperete audio and video. And don't know what to do...

there's log:
(gdb) run
Starting program: /usr/bin/kdenlive
[Thread debugging using libthread_db enabled]
project monitor connected
clip monitor connected
QWidget::insertAction: Attempt to insert null action
QWidget::insertAction: Attempt to insert null action
[New Thread 0xb57b6b70 (LWP 2113)]
[New Thread 0xb4414b70 (LWP 2114)]
[New Thread 0xb3c13b70 (LWP 2115)]
[Thread 0xb4414b70 (LWP 2114) exited]
[Thread 0xb3c13b70 (LWP 2115) exited]
[New Thread 0xb3c13b70 (LWP 2116)]
[New Thread 0xb4414b70 (LWP 2117)]
[Thread 0xb3c13b70 (LWP 2116) exited]
[Thread 0xb4414b70 (LWP 2117) exited]
[New Thread 0xb4414b70 (LWP 2118)]
[New Thread 0xb3c13b70 (LWP 2119)]
[New Thread 0xb1c27b70 (LWP 2120)]
[New Thread 0xb1426b70 (LWP 2121)]
[New Thread 0xb0424b70 (LWP 2122)]
[New Thread 0xafc23b70 (LWP 2126)]
[Thread 0xb1c27b70 (LWP 2120) exited]
[Thread 0xb1426b70 (LWP 2121) exited]
[New Thread 0xb1426b70 (LWP 2127)]
[New Thread 0xb1c27b70 (LWP 2128)]
[Thread 0xb1426b70 (LWP 2127) exited]
[Thread 0xb1c27b70 (LWP 2128) exited]
[New Thread 0xb1c27b70 (LWP 2129)]
[New Thread 0xb1426b70 (LWP 2130)]
X Error: BadWindow (invalid Window parameter) 3
Major opcode: 20 (X_GetProperty)
Resource id: 0x5800187
[Thread 0xb1c27b70 (LWP 2129) exited]
[Thread 0xb1426b70 (LWP 2130) exited]
[New Thread 0xb1426b70 (LWP 2131)]
[New Thread 0xb1c27b70 (LWP 2132)]
thread apply all bt
[Thread 0xafc23b70 (LWP 2126) exited]
[Thread 0xb1c27b70 (LWP 2132) exited]
[Thread 0xb0424b70 (LWP 2122) exited]
[Thread 0xb3c13b70 (LWP 2119) exited]
[Thread 0xb4414b70 (LWP 2118) exited]
[Thread 0xb57b6b70 (LWP 2113) exited]
[Thread 0xb1426b70 (LWP 2131) exited]

Program terminated with signal SIGKILL, Killed.
The program no longer exists.
(gdb) thread apply all bt

who can help???


No problem on my system
openSUSE 11.4 64bit KDE 4.6
Kdenlive 0.8.2