HI
Thanks for your response. I have updated WPDM to 6.2.1 and then took a look at the console and found that a number of js an css files were missing – 404 not found. I have copied these from a backup / development system that we use and the button is now working – I can add my category shortcode. However, it now doesn’t use my template but produces a complete jumble of download panels of various designs. The development site was not (could not be) updated to the new version so this may in itself have created more errors,
I have also discovered there are other unrelated files reported missing when I load any page so I think I need to sort those out first. However, is it possible for me to completely remove WPDM (having backed up my templates) and re-install it without loosing the files that are in the downloads folder? We have moved/changed our site domain a number of times in the past and our hosting guru transfers the site accordingly but it is evident that some files have not being transferred correctly.
I will continue investigating these issues for the time being but may get back to you with admin access later this week.
Again thanks for your response.
Neil