I am starting to port the Spreadsheet Detective to Excel 2007 Beta 2,
and it has been a painful experience. For the first time since Excel
95, the new version will not simply run the previous add-in.

I had in fact kept the add-in compatible with Excel 95 & and simply
called newer functions as needed depending on the detected version. It
is a credit to Microsoft that I could do that easily for all these
years, although the then new drawing objects of Excel 97 required some
ugly optimizations to work efficiently.

But no more. I suspect that my use of the old XL95 drawing object
interface to shapes is problematic, as is the XL95 workbook format
which is supposed to be readable in 2007 and is sort of...

So I used Excel 2000 to convert the spreadsheets to the newer XL97 .xls
format. Works fine in Excel 97, 2000 & 2003, but 2007 complains that
the spreadsheet is hoplessly corrupted.

I am also highly suspicious that simply installing the 2007 Beta2 has
destabalized the preivous versions of Excel on the same machine. I
know about DLL hell, but this should still not happen.

Does anyone have similar experiences? How have other add-in upgrades
gone? (And this is all before worrying about the new sizes, ribbons
etc.)

Also, does anyone have a good utility to dump the VBA code out of a
project? (It is a pity that Excel 2003 .xml does not support this.)

Regards,

Anthony