Tvheadend

Hello,
since a few realeases i always have the problem that tvheadend crashes and whats more really bad, that tvh always loses channel to service associations. and i dont know why. any experiences with that?

here the log of the crash:

Feb 20 22:13:24 PanholzMULTIMEDIA tvheadend⁹⁶⁴²: CRASH: Signal: 11 in PRG: /usr/local/bin/tvheadend (4.1-1555~g414512d) [9e637566265f227f07fd6c75ea892a40bc27da9d] CWD: /
Feb 20 22:13:24 PanholzMULTIMEDIA tvheadend⁹⁶⁴²: CRASH: Fault address 0x4e247b30 (Address not mapped)
Feb 20 22:13:24 PanholzMULTIMEDIA tvheadend⁹⁶⁴²: CRASH: Loaded libraries: linux-vdso.so.1 /usr/lib/x86_64-linux-gnu/libssl.so.1.0.0 /usr/lib/x86_64-linux-gnu/libcrypto.so.1.0.0 /lib/x86_64-linux-gnu/libz.so.1 /usr/lib/liburiparser.so.1 /usr/lib/x86_64-linux-gnu/libvdpau.so.1 /lib/x86_64-linux-gnu/libdbus-1.so.3 /lib/x86_64-linux-gnu/libdl.so.2 /lib/x86_64-linux-gnu/libpthread.so.0 /lib/x86_64-linux-gnu/libm.so.6 /lib/x86_64-linux-gnu/librt.so.1 /usr/lib/x86_64-linux-gnu/libstdc++.so.6 /usr/lib/x86_64-linux-gnu/libva.so.1 /usr/lib/x86_64-linux-gnu/libva-drm.so.1 /usr/lib/x86_64-linux-gnu/libva-x11.so.1 /lib/x86_64-linux-gnu/libgcc_s.so.1 /lib/x86_64-linux-gnu/libc.so.6 /usr/lib/x86_64-linux-gnu/libXext.so.6 /usr/lib/x86_64-linux-gnu/libX11.so.6 /lib64/ld-linux-x86-64.so.2 /usr/lib/x86_64-linux-gnu/libdrm.so.2 /usr/lib/x86_64-linux-gnu/libXfixes.so.3 /usr/lib/x86_64-linux-gnu/libxcb.so.1 /usr/lib/x86_64-linux-gnu/libXau.so.6 /usr/lib/x86_64-linux-gnu/libXdmcp.so.6 /lib/x86_64-linux-gnu/libnss_compat.so.2 /lib/x86_64-linux-gnu/libnsl.so.1 /lib/x86_64-linux-gn
Feb 20 22:13:24 PanholzMULTIMEDIA tvheadend⁹⁶⁴²: CRASH: Register dump [23]: 000000000154384000000000000027b600000000000000000000000000000000000000000000000000007fae3ee6e06000000000ffffffff00007fae39d8e70000007fada004cce000007fae39d8cb6000007fae0403fb10000000000286ce30000000000000100000000000a0847b3000007fada00060b000007fae39d8cb5800007fada00060c7000000000001028600000000000000330000000000000006000000000000000efffffffe7ffbba13000000004e247b30
Feb 20 22:13:24 PanholzMULTIMEDIA tvheadend⁹⁶⁴²: CRASH: STACKTRACE
Feb 20 22:13:24 PanholzMULTIMEDIA tvheadend⁹⁶⁴²: CRASH: /usr/src/tvheadend/src/trap.c:148 0x46bab6
Feb 20 22:13:24 PanholzMULTIMEDIA tvheadend⁹⁶⁴²: CRASH: ??:0 0x7fae3d95e8d0

thanks & regards