Crash

Assert failed :!currentEncoder
 at line 284, file /build/buildd/avidemux-2.5.1+repack/avidemux/ADM_audiofilter/audio_encoderPlugin.cpp/usr/lib/libADM_core.so(ADM_backTrack+0x6d) [0x1f292d]
avidemux2_gtk(_Z25audioFilter_getOuputCodecv+0x2e) [0x80a552e]
avidemux2_gtk(_Z9oplug_flvPKc+0x3e5) [0x80dbab5]
avidemux2_gtk(_Z6A_SavePKc+0x3a0) [0x809ed30]
avidemux2_gtk(_Z13A_SaveWrapperPc+0x13) [0x8097483]
/usr/lib/libADM_coreUI.so(_Z17FileSel_ReadWritePFvPKcEiS0_S0_+0x77) [0xab7da7]
avidemux2_gtk [0x81ac8a2]
/usr/lib/libADM_coreUI.so(_Z16GUI_FileSelWritePKcPFvS0_E+0x2c) [0xab826c]
avidemux2_gtk(_Z12HandleAction6Action+0x1694) [0x809c6d4]
avidemux2_gtk(_Z11guiCallbackP12_GtkMenuItemPv+0x20) [0x81b1950]
/usr/lib/libgobject-2.0.so.0(g_cclosure_marshal_VOID__VOID+0x7c) [0x70e9fc]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x1b2) [0x701072]
/usr/lib/libgobject-2.0.so.0 [0x7167a8]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x7bd) [0x717b2d]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_by_name+0x192) [0x717e42]
/usr/