application freezes when changing speed and length at the same time

[Alexander Stohr]

OS: Ubuntu 13 with 64 bit running in a virtual box
installed from the Ubuntu provided repositorys.
OpenShot 1.4.3

i was importinga HD video clip of about 3 seconds lengt to the time line
and then selected properties on it for adjusting the playback speed to 1/4.
initially i closed the dialog and wondered why a slowed down clip wont get longer than it original length.
with a second properties opening i could adjust the duration to the desired maximum of roughly 12 seconds.

due to the need of post-install of some codecs i closed the application but forgot saving my project in front.

after that i rebuilt my tiny project and now tried to first choose 1/4 speed on the video plus second adjusting the duration.
when clicking the duration up-down buttons the application somehow froze up. (i think i first hit down to zero, then tried up...)

[Olivier Girard (eolinwen)]

Do you have given the same name to this project ?
You should remove in the hidden folder openshot in your home, the file called pid.lock. If you don't find it in, you could remove directly the folder but you'll loose all that you have in (i.e Blender files generated, Transition imported,...).
At the next start of Openshot, it will be recreated.
That's could resolve your issue.