Hi Mick/Martin/jjjnette... Just to plough into the issue.
I'm having lots of trouble opening DSS "saved picture to file" tiffs (or any DSS tiff format) with Adobe CS3 but my "Autosaved" tiffs are ok. This is happening on my main computer. Yet on another computer, a Lappy, I can open "saved picture to file" tiffs (from DSS) with CS3 no problems.

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Funny thing I can "copy current picture to clipboard" from DSS & past it into CS3 ok...but I cannot open "saved picture to file" tiffs on this computer.
I know from the DSS
forum that there are a few other users who have the same issue and others who have the opposite issue to me.
It appears to me that DSS is corrupting my "saved picture to file" tiff images (on my main computer) as I cannot open these on other computers as well.
Removal & re-installs of DSS & CS3 did not cure the issue.
Sigh...I've been trying to work this out for some time.