Hi. I have a very important file that I've been working on between a Mac and windows machine and saving on a USB. Today I opened it up on a MAC and then when I changed to the Windows machine it wasn't there. On the windows machine I made sure I could see hidden files and there I find the file now with the prefix "._", but windows won't let me open it. The normal file is not there just the file with the prefix. What can I do? I urgently need the file. What do y'all suggest? Thanks for your help!