Dreamweaver MX 2004 usually opens new documents in separate tabs. For some reason I've suddenly lost that facility - and it will now only cascade or tile open files. It's making building a large site more tricky - as I really need several files open at once to skip between them.

Tried the Adobe/Macromedia sites but can't find any reference to tabbed file viewing disappearing. I've been using the program for 4 years now - never happened before. I'm reluctant to reinstall as I have the program so customised I think it would take me for ever to get it back to where I want it.

Does anybody have any ideas?