I spoke too soon!I did the two commands you suggested, but the apt-get must have installed the standard v39 from the toutatis repository again. Which crashed. I should have realised it was still the wrong version since there was hardly any download time..
I then went into Synaptic and carefully made sure to choose your version to install - which took a decent time to download. And it is working fine so far (up for about 10 min).
Many thanks!
