form_tag isn't rendering any form

[lompy]

i generated layouts and auth logic through

rails g nifty:layouts --haml
rails g nifty:authentication --haml

In ''app/views/sessions/new.html.haml" there is line

• form_tag sessions_path do

But it's not rendering any html code. In order to get it to work i changed it to:\

= form_tag sessions_path do

My gem list:

actionmailer (3.2.6)
actionpack (3.2.6)
activemodel (3.2.6)
activerecord (3.2.6)
activerecord-sqlserver-adapter (3.2.8)
activeresource (3.2.6)
activesupport (3.2.6)
arel (3.0.2)
bcrypt-ruby (3.0.1)
builder (3.0.0)
bundler (1.1.4)
coffee-rails (3.2.2)
coffee-script (2.2.0)
coffee-script-source (1.3.3)
erubis (2.7.0)
execjs (1.4.0)
haml (3.1.6)
hike (1.2.1)
i18n (0.6.0)
journey (1.0.4)
jquery-rails (2.0.2)
json (1.7.3)
mail (2.4.4)
metaclass (0.0.1)
mime-types (1.19)
mocha (0.12.1)
multi_json (1.3.6)
mysql (2.8.1)
nifty-generators (0.4.6)
polyglot (0.3.3)
rack (1.4.1)
rack-cache (1.2)
rack-ssl (1.3.2)
rack-test (0.6.1)
rails (3.2.6)
railties (3.2.6)
rake (0.9.2.2)
rdoc (3.12)
rubygems-bundler (1.0.3)
rvm (1.11.3.4)
sass (3.1.20)
sass-rails (3.2.5)
sprockets (2.1.3)
sqlite3 (1.3.6)
thor (0.15.4)
tilt (1.3.3)
tiny_tds (0.5.1)
treetop (1.4.10)
tzinfo (0.3.33)
uglifier (1.2.6)