OptionParser::InvalidOption: invalid option: --sourcemap

[pyk]

i try this both on branch gh-pages and kickstarter and face the same problem after running npm install and then grunt dev.

Running "connect:dev" (connect) task
Started connect web server on localhost:4000.

Running "sass:src" (sass) task
OptionParser::InvalidOption: invalid option: --sourcemap
  Use --trace for backtrace.
Warning:  Use --force to continue.

Aborted due to warnings.

[thedaviddias]

I have the same problem. Do you find any solution ?

[pyk]

sure, i run this on my terminal

export LANGUAGE=en_US.UTF-8
export LANG=en_US.UTF-8
export LC_ALL=en_US.UTF-8

and it works for me. i think is encoding problem on ruby