{advanced_dlg.code_title} + browser name in Tiny MCE popup

Tiny MCE has been working fine in the two sites I’m working on. Today I updated one of the sites with the latest build of EE 1.6.8 and since then the popups in Tiny MCE–such as PasteText, HML and pic– don’t work any longer. Get title such as {advanced_dlg.code_title} + browser name and a non editable pop-up.

Strangely I had not touched the 2nd site and yet it is also affected…

My initial settings which have been OK for a few weeks included:

Strict http://address… to script.js

// URL relative_urls : false, remove_script_host : true,

Tried to change them to relative addresses, with no result.

Thanks in advance for your help.