A few weeks ago I upgraded Sandboxie 3.34 to 3.35 Beta on one of my PC's. I started sometimes getting the following Error: From Windows XP Pro SP3 Event Viewer: "The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility on the volume C:." This error of course always results in a chkdsk on the next PC start. chkdsk never reports fixing a problem when it completes it's run on startup. I made a Post about the problem here: https://www.wilderssecurity.com/showthread.php?t=237716 I decided that with the release of Sandboxie 3.36 yesterday I would upgrade another of my PC's from 3.34 to 3.36. Today I have gotten my first ever ntfs Error (Same as above) on that PC. Is anyone else getting this problem? Any ideas? Thank you.