.erb reports error "invalid output" with htmlbeautifier 1.0 #85

I am using Sublime 3 and installed BeautifyRuby via the package control. BeautifyRuby reports on saving an .erb file the error "Error: invalid output. Check your ruby interpreter settings" when I am using the newest htmlbeautifier which is 1.0 installed via gem.

I have to use an older version gem install htmlbeautifier -v 0.0.12 to make it work.

Unfortunately this forces spaces instead of tabs on me.