c:\Users\yourlogin\AppData\Roaming\Disruptive Innovations SARL
and then relaunched BG, same error.have got the same problem when install update Bluegriffon and use css plug in .
C:\Users\username\AppData\Roaming\Disruptive Innovations SARL
C:\Program Files (x86)\BlueGriffon
I reinstall Bluegriffon 17 in another default directory with suffix( BlueGriffonEN17) and then the css editor extension and all work .
It is strange that many users have the same error .
Blue griffon 1.7 must change some file compare to 1.6
he error in windows 8 64 bit are locate in
for bluegriffon in C:/programfile i use the bluegriffon desinstaller , i don't delete the directory