0.4.0 breaks with "no method 'flags'" error

[thanpolas]

After upgrading to 0.4.0 I encountered this error:

Verifying property parallel.web exists in config...OK
File: [no files]
Options: grunt=false, stream=false
Warning: Object #<Object> has no method 'flags' Use --force to continue.

I saw a commit related to flags by @vernonk do i need to change my config?

[vernonk]

Check out the discussion over here: https://github.com/iammerrick/grunt-parallel/pull/23

[thanpolas]

I see... Still no examples or sample configurations with the new flag, I don't understand how to use it or how to solve my problem