Good afternoon everyone. After spending several hours trying to troubleshoot this problem, I did find a temporary solution. When you're finished with a client's file, go to File - Save As, and then save into your data directory. You have to choose "Replace the existing file." This will work without causing the software to freeze. On a side note, I'm using the stand-alone version of ProSeries, but I save my data on a secure NAS system. I did call Intuit's tech support, and the lady I spoke to was the most incompetent tech support representative I've ever spoken to. These people just read from their FAQ database and have no knowledge of their software or how computers work. She eventually told me that they couldn't offer me any support because I wasn't saving the data on a local hard drive. She also didn't know that this was a known issue that Intuit was supposedly investigating. I found this thread after the fact. Good luck.