An error occurred trying to open a PXD with the Pixlr Grabber

Hi,
When I try to open a PXD of my image with The Pixlr Grabber I have this error message. I can open the image properly but I cannot edit it because of this image. I never had this error before so I am stuck on it. Can anyone help me to fix this ? Is there any error when I saved the PXD file ?
Thank you !

An error has occurred, please try later! Error: Error #2058
