Sonny Software

I am having some strange troubles with quickadd. Pasting a DOI in quickadd is giving always a reference not found message but if I open a new Empty reference, paste the DOI in its field and then invoke "Autofill from Internet, all fields" it works OK. QuickAdd used to work just fine...
Any clue?

Posting a DOI that fails would be helpful.

Jon
Sonny Software