crashes memory corruption segmentation fault

[Penis]

Ubuntu 14.04.1, 64 Bit, Openshot Version: 1.4.3, Installed using apt-get, Operating System and Librarys are fully Up to Date.
Openshot Crashes alot: Over a Period of 2 Minutes it crashed like 4 Times and like 25 Times since i started using it.
The Bug is Probably due to Memory Corruption and could in my opinion be caused of an issue with a buffer.
The Bug is triggered when clicking on the Timeline to go back and forth. The Video iam editing is about 2h long.

This is what Openshot report when the Crash happens when starting from the Command Line:

on_frmMain_key_press_event
on_tlbPlay_clicked called with self.GtkWindow
on_frmMain_key_press_event
on_tlbPlay_clicked called with self.GtkWindow
on_frmMain_key_press_event
on_tlbPlay_clicked called with self.GtkWindow
on_frmMain_key_press_event
on_tlbPlay_clicked called with self.GtkWindow
on_tlbArrow_clicked called with self.GtkRadioToolButton
on_tlbResize_toggled called with self.GtkRadioToolButton
on_tlbResize_toggled called with self.GtkRadioToolButton
on_tlbRazor_clicked called with self.GtkRadioToolButton
project state modified
state saved
project state modified
state saved
on_mnuRemoveClip_activate clicked
project state modified
state saved
Segmentation fault

This is What Dmesg reports:

openshot[6595]: segfault at 0 ip 00007fbe8b2b76c0 sp 00007fbe635737f0 error 4 in libavformat.so.54.20.4[7fbe8b1ea000+10e000]