There have been a few updates to the 4.0.1 release package to address a few minor issues. Please download and upgrade again if you have upgrade to 4.0.1 release manually earlier.
Sorry, forgot to update one script to point to the right path.
Should work now. You can force it download again by removing
/path/to/lsws/autoupdate/release
/path/to/lsws/autoupdate/download