Hello,
since my message I have been able to complete the project I was working on. No crashes since. This doesn't mean I don't come across other challenges, I guess it is the learning curve. Right now I want to make a change on the document I made (and what crashed several time before) and now I can open the file, but not work in it. Even properties, after opening, is shows in it's light grey colours and I can not select within the levels. Nothing is locked.
I am using Scribus 1.4.5, installed via the official website download page, in Ubuntu 14-04 LTS on a DELL Inspiron-5458. The Ubuntu was installed on this machine, the reason I bought it.
Ton