Tactic folder won't open

Hi 

I have tried opening my tactic folder and none of my tactics created are showing in the folder. I get a message saying this file could not be imported. My set pieces folder as well as schedule folders both open with whatever I have saved in those folders.

I have deleted the tactic folder and created a new one but I still get the same message. I am having to save my tactics into my FM23 folder in order to use them in the game. 

Has anyone else had this issue?