Crash of SX3 and working project unopenable

Hello, I created a project under SX3, while working on it the machine crashed… and now when I want to open it, a window tells me that it is from the SX1 version!.. I imagine which version is indicated in the .cpr? Anyone got a solution? (CUBASE SX3.0.2)

Unfortunately, this means that this project file has become corrupted. If auto saving is on, there should be a .bak file in the same folder which will allow you to restore your project to a previous state.