Web Photo Album 2.2 in DW CS3

Running the extension from the Command menu I got to selecting the folder of images and just after loading the folder, or selecting and image from the list I get this error:

"While executing onClick in Create Web Photo Album 2.htm,the following Javascript error(s) occurred:

At line 1626 of the file C:\Program Files\Adobe\Adobe Dremweaver CS3\Configuration\Commands\Create Web Photo Album 2.js ReferencedError:Dwsize is not defined"

Any ideas how to solve this one?

Thanks

Timoto