Hello Barbara,
Fantastic...!!
you solved the Banner problem in
WhatsApp Plus Site Styles....! You had a very clever suggestion!
For new readers I followed Barbara's instructions... 'right' clicked my NOF-2015 icon on the desktop and selected 'Run As Administrator'....NOF-2015 opens and now the Banner can be selected and changed for a new banner in Site Styles.
I noticed the 'Set As Style' button did not activate so after I deleted the old banner , and placed my new banner, I went to FILE tab and then clicked on 'Save Site'...
And now my new Banner is appearing.
I can confirm also that the Java RE with 32 bits is operating on my system as Barabara suggested I should check.
Thank you Barbara, Anton, Franko and Bluesman!