keyboard editing commands not working

Hi …
… keyboard editing commands not working in LibreOffice 1:4.2.4-0ubuntu2
… under Ubuntu 14.04 LTS English on a Japanese keyboard.

eg File >>> Save , saves the LibreOffice document-file. Ctrl-S no longer saves, instead enters “s”
eg Enter key does nothing when pressed; prior to difficulties it would place the cursor in the next line below …

The difficulties may have began after i installed some LibreOffice or Ubuntu Software Updater item while i was stll using a commercial website.

The keyboard commands fail only under LibreOffice!

Thanks. eloh