Perhaps because it is a physical folder, and not a virtual album. Try to remove the directory with an external file manager.

steve.doig wrote:

What do I try next please?

you probably need to resincronize if you add or delete new files or folders
Admin => Tools => Synchronize

steve.doig wrote:

I did do Admin => Tools => Synchronize

but the folders I deleted were still there afterwards.

1) make sure the folders are actually deleted (physically) from server, using a FTP client

2) on Admin => Tools => Synchronize:
- check "directories + files"
- check "display maximal information"

-uncheck "only perform a simulation"  (this is very important)

3) if the folders continue to appear in Piwigo, you can try some maintenance tasks
Admin => Tools => Maintenance
-Update albums' information
-Purge user cache
-Purge compiled templates

Last edited by eliz82 (2017-12-20 09:26:28)