[libreoffice-users]

Suggestion:
           (1) when you download, save to wherever - as the Download folder;
           (2) close all opened programs;
           (3) go to saved file;
           (4) close folder, after clicking to install file;
           (5) follow the instructions, as they come forth during the
installation;
           (6) Voila ... the program should be now ready for your use.

       If not, then try emptying the cache - as with CCleaner

       If still not, then make sure the machine has not somehow picked up
some virus

       Hoping this helps,