All my vias are bugged

[chirayuLKUYU]

Ive been working in this pcb file for the past couple months. I opened the file today and all my vias are bugged. They all have a lock icon on them. Tried unlocking them, deleting them, moving them, reopening the file. Everytime i interact with them i get an error noise. What is going on? The properties of the vias don't even show that they are locked. 

[Pieter.Jan.Van.de.Maele]

Hi! Please take a look at the "layers" panel and make sure that the via layer is not locked: