I have OSX 10.6 and Windows 7. Here's what happens: 1. I connect to the Windows machine (MCE) and use login credentials to do so. 2. I browse to the folder on MCE I want to copy to. 3. I drag a folder from my Mac containing a 1Gb+ file. 4. The file begins to copy and a good rate. 5. About 1/3 of the way into the transfer the files that appeared in the MCE folder disappear (from the view on the Mac) but the copy continues. 6. After the copy reaches 100% I get this error: The Finder can't complete the operation because some data in "NAME OF FOLDER" can't be read or written. Error code - 36 Then, I can't connect to MCE again until I restart my Mac. I can copy large files all day to the Mac from MCE computer and from other Windows PC's to MCE without error. It just seems to be from my Mac to MCE. Thoughts? If a video would help, let me know and I'll screen cap it.