Everytime I open up a file in Photoshop, it says, 'Linotype Fontexplorer version fc4 or newer cannot be found'. I recently deleted that program, how can I get Photoshop to stop looking for it? Something in preferences?
That is a problem with you Linotype FontExplorer plugin.
Delete the plugin.
I did delete it but it's still doing that. how do I know if i've deleted everything tho?
You haven't deleted everything -- somewhere part of their code is still trying to load.
Retrieving data ...