Missing action lists when opening Photoshop ...

Hey guys! I have a question regards action lists ... I had a list of various actions for my images, and I've been using them every day / night for the last couple of years. I've just opened Photoshop today, and noticed my Photoshop layout was different, and had to go to Windows > Actions to get the lists back, but all my actions are gone, and I have no idea why, or where I can find them.

Can anyone help me out?