Maybe you got a bad usb drive and your hen is corrupted, try to download it again, extract, check integrity and try again.
If you install TeraByteCopy, when you copy something you can click the "verify" box and it will make sure everything was copied without errors, or you can use any MD5 tool or even 7zip (right click any file you want to check, go to CRC tab and choose one of the methods).
And we know you've tried, but please do it again in order to ensure everything is fine.
Rebuild database, download and reinstall HFW, install Han, enable blind and install Hen, RESTART, wait a few seconds and then try to enable Hen, and proceed to install the new webMAN mod posted above (github).
Yes it takes a few minutes to do it all, but you need to help them help you.