Since upgrading to Photo Mechanic 4.5.3 (from 3.7), I am constantly having problems with renaming my photos. I work at a company where my images are stored on a Windows server that I have access to. I work on a Mac Pro and access images from the server. When I try to rename images in a folder, which I have permissions to Read & Write, I get an error message which states "An error occurred while renaming photo. The operation will be cancelled and the original filenames will be restored." If I copy the folder to my desktop, I can rename the files. I never had this problem in 3.7 and am wondering if anyone else has brought this to your attention? I would appreciate any feedback you have. Does Photo Mechanic have a known issue with permissions?