Paul, much obliged for your kind efforts.   
      
   After trying every setting on Ubuntu Software Center I stumbled upon GDebi   
   which was more verbose and told me it was dependency errors.   
      
   So I now know what I need to do   
      
   But I am baffled because I had previously installed the same Ubuntu   
   (CAELinux2020) on the same machine and USC did complain about   
   dependencies. (Someone on Reddit told me which packages i needed to   
   preinstall but I never got to it entirely). THis time USC just asked for root   
   password, ran the progress bar then took me back to the install button.   
   I guess now it doesn't matter. But it was odd.   
      
   USC is otherwise fine in getting me "approved" software.   
      
   --   
   	 Vasos Panagiotopoulos  panix.com/~vjp2/vasos.htm   
     ---{Nothing herein constitutes advice.  Everything fully disclaimed.}---   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)