Thanks both of you for suggestions. 

My InDesign CS4 is on C drive Windows XP, so with my husband's help (he is more 'techy' and I was worried about losing all my default styles, formats, etc) we tried Stix's suggestion as it had a specific mention of a similar problem solved by Marie. This one had not come up on my forum searches before.

We downloaded & installed the Preference Manager folder in my Scripts as directed, but although it was an option at the end of the Preferences menu it was greyed out so inaccessible.  Also still greyed out were the Export to Digital editions & export to Dreamweaver options as before, either with or without document open, before and after computer restarts. Interestingly these two options are not included in my Menus options (above Preferences on Edit menu) where you can select which items you want visible.  Is this significant?

We also reinstalled the 'Adobe extend script tool kit', although it was already there.  Are there any other 'plug ins' or something I should have installed to address the Preference manager and Export options?

.... so no progress to date!  Any more ideas? 

Sylvia

Reply to Stix & Peter's suggestion.

Saw Marie's response to your suggested link - but not been able to achieve replacing preferences.

As per my reply here

- I first tried using the 'free script from inTools.com to backup & store multiple sets of preferences' - but as per my reply several days ago after your response above We downloaded & installed the Preference Manager folder in my Scripts as directed, but although it was an option at the end of the Preferences menu it was greyed out so inaccessible. (same as Export to Digital editions from individual doc or book, which is what I am trying to do).  I don't even know how clean the epub file will be if I get there, but the PDFs I convert through external software still have too many errors to correct.

- As there was no reply yet I thought I'd bite the bullet & have a go at the previous suggestion on link to 'trashing preferences'  & rename the InDesign Defaults & InDesign Saved data files, but I can only find the first one, now renamed OLD-InDesign Defaults in same place - hope that is OK.

- I do not have a CACHE folder after my English language folder, nor can I see 'InDesign Saved Data' file in any of the other folders. re Windows XP: C:\Documents and Settings\<USER>\Local Settings\Application Data\Adobe\InDesign\<Version #>\<Language>\Caches\

I really don't want to lose all my print & doc presets  formats, styles, etc which have evolved over some time now and can't remember how i created most of them.

HELP PLEASE.  WHAT TO TRY NEXT?

Sylvia

PS I've also replied to Peter's 'trashing' thread, but here too in case someone else sees it and can help.