Problem opening PSD in Photoshop Beta

Since artificial intelligence was implemented in photoshop I decided to delete photoshop beta, from that moment all the psd files saved by the photoshop beta application are no longer openable. I tried to install photoshop beta again but this did not bring any positive feedback, in fact the files are not openable but with the following warning 'I cannot open the alias “NAMEFILE.psb” because it is impossible to find the original element.' How can I solve my problem?