Hi, so I'm trying to use wintoolkit 1.4.1.28 to integrate post-sp1 updates to a Windows 7 Enterprise x86 image, and every time I try to start the integration process I get this error: Unknown Mount Error Win Toolkit was unable to mount an image! This is even though DISM reports success, here is the last few lines from the log in the very same window with the error msg: Output: [ 99% ] Mounting progress Output #1: [ 99% ] Mounting progress Output #2: [ 99% ] Mounting progress Output #3: [ 99% ] Output #4: Writing Status T: [ 99% ] | PT: Done Status Writing Taskbar Done Taskbar Output: [ 100% ] Mounting progress Output #1: [ 100% ] Mounting progress Output #2: [ 100% ] Mounting progress Output #3: [ 100% ] Output #4: Writing Status T: [ 100% ] | PT: Done Status Output: [ 100% ] Mounting progress Output #1: [ 100% ] Mounting progress Output #2: [ 100% ] Mounting progress Output #3: [ 100% ] Output #4: Writing Status T: [ 100% ] | PT: Done Status Output: Successfully mounted image. Output: Total elapsed time: 40 sec Finished I can sometimes retry and it works, but other times it's persistent. I don't have any antivirus installed. Host OS running the tool is Win 7 Enterprise x64. Any help would be appreciated to resolve this!