Bug 360204

I am trying to embed videos (mpeg and/or avi) in a presentation. To do that I first select "Videos" and then on "Shape Handling Tools": I enter the location of the video I want to embed, select "Select as part of the document" (otherwise Stage crashes - and I do not understand why....), and then the video is correctly inserted. HOWEVER, the following message appears when I click on "save" to save the modified presentation:

stage(8345)/koffice (lib flake) VideoCollection::completeSaving: saving video failed

And indeed, when I try to reopen the saved file, Calligrastage crashed with the following message:

Legacy integer arithmetics implementation 
stage(8436)/koffice (lib flake) VideoData::setVideo: Find file in store  "Videos/video1.avi" failed 
KCrash: Application 'calligrastage' crashing...
KCrash: Attempting to start /usr/libexec/kde4/drkonqi from kdeinit
KCrash: Connect sock_file=/home/<username>/.kde/socket-cosmo-lap2/kdeinit4__1

(where I have changed the actual directory with <username> here). 

Any ideas about why it does not save the presentation with the embeddede video? And why it searches it as "Videos/video1.avi"? 

Many thanks in advance!

Reproducible: Always