Windows keeps the jump list cache here:
%APPDATA%\Microsoft\Windows\Recent\CustomDestinations
Note that Recent
doesn't appear to be a child of Windows
, but it's there; just copy/paste that path into the Run box. You'll be taken to a place that has lots of .customDestinations-ms
files.
Old versions of Opera (pre-30?)
Use one of Opera's jump list items and see which file gets updated. (For me, it was titled 7fc0edee3248ce7
.) Delete that file. That will break the jump list. Run Opera normally by just clicking the pinned icon; the file will be recreated and the jump list will be restored.
Also, Opera keeps some proprietary data here:
%APPDATA%\Opera Software\Opera Stable\Jump List Icons
If you rename or remove that folder, Opera will recreate it. It appears that there's one file for every Speed Dial item.
New versions
Apparently, Opera no longer attempts to restore the jump list items. I had to completely uninstall (i.e. torch user data as well) and reinstall it to get the items back.