When setup the mobile theme filter, ZenPhoto show the following error?:

NOTE: Instantiating the option interface within the plugin may cause performance issues. You should instead set $option_interface to the name of the class as a string.

Is it normal?

Zenphoto 1.4.1.6
mobile_theme_filter 1.0.2

Regards,
Chris

The plugin is already a little older so it is obviously not up to date. Maybe its author will respond here.

However, the change to get rid of the notice is actually described in the message you got, so you can fix the problem if you wish.

If I recall last time I used it there were a few things that needed to be updated to work properly as of 1.3, I had it updated to run, but recently deleted it with the exploits that happened and never re-downloaded to get it running.

If the plugin author doesn't respond within a couple of days I'll take a look at getting the plugin back up and running if needed. Let's give the author some time to respond though.