HTML manuals error 'getAttribute' not supported in headfoot.js

[Mattia]

Hi, after a correct installation of Oracle 12.1 HTML manuals, when I open a result page after a search, the program locks for 30 seconds and then shows the requested page and an error pop-up saying "object doesn't support property or method 'getAttribute'"
file:///C:/Oracle/Manuals/dcommon/js/headfoot.js
Even if it finally works, it's annoying to wait for this time.

 

[Marco Kalter]

Can you go to Preferences > User Interface / Options, change the "Use internal HTML viewer" option, restart PL/SQL Developer and try again?

Can you also let me know your PL/SQL Developer version?