I've looked for the answer to this everywhere and can't find it.

We have a customer using a version old version of office (97) - have just upgraded them from GW6.5 to GW2012 and now the Excel Integrations for DMS are broken. We've tried putting the older gwxl97.xla in the xlstart folder and remove the gwxl2007.xla (or gwxl2010.xla can't remeber which came with GW2012 now) but documents still can't be returned to the library.

I know the short answer will be - newer Office version but any ideas which are supported? Installing LibreOffice at the minute but the customer may end up wanting a MS product and nice to be able to tell him which ones he can choose from.