@Vero Great analysis and advice, thank you.
Yup, my Alfred preferences folder was located in Dropbox, along with most of my data, but I've now relocated it to User/library on Mac, so fingers X'd it will be happy there.
Many thanks for the super fast response.
Pat
It is a frequent annoyance that I look for something in Clipboard History, and find it has not been working for some time. The options to keep plain text; keep images; keep file lists seem to clear each time Alfred updates and then no clipboard history is saved.
For me, this is very unhelpful behaviour and I will appreciate it if it can be fixed so those options are restored to their previous settings after an update.
Thank you!
Pat