I'm running Vegas Pro 16, build 424 on Windows 7 64-bit. I'm seeing an issue that I believe is new to this build, or at least I have not noticed it previously. Vegas is not "cleaning up" its process when I exit the program. When I exit the program, the "Vegas 160.exe" process is left running. You can easily see it in the processes window of the Windows Task Manager. The first time or two I run Vegas this doesn't have much effect, but if I run Vegas several times there are a number of these processes (one for each launch of the program) left running. At some point Vegas begins crashing and locking up, and an "out of memory" message sometimes pops up, despite that the resource manager shows memory still available. If I manually go in and "End Process" for each of the processes that have been left running, and re-launch the application, Vegas seems to again perform correctly.