Thread:Project:Support desk/Scripts in Common.js doesn't load correctly in 1.19

Private wiki, using MediaWiki, 1.19.0, PHP 5.3.10 (apache2handler), SQLite 3.7.7.1 on Mac OS X 10.7.4.

I added an extra hard drive on my laptop and decided to restart my private wiki on a new install, which upgraded the mwplatform from 1.18.1 to 1.19.0. Exported old data using dump.php.

On the new installation (1.19.0 version), the javascripts refered to in MediaWiki:Common.js doesn't load when I go to a page, but they do load if reload the page (also, leaving the page and going back requires the same reload to make it load the scripts).

These scripts work without any problems when I boot the old disc with 1.18.1 and check it's wiki. Scripts work on the first attempt in the 1.19.0 version if run as gadgets (and when running it from User/common.js), but not using MediaWiki:common.js

Any suggestions on why this happens and what to do to correct it would be welcome!