slimerjs - Aborted due to warnings - 0.4.2

[4lun]

Same issue as #61 though the mentioned fix of reinstalling grunt-casper didn't seem to help.

Initializing
Command-line options: --verbose

Reading "Gruntfile.js" Gruntfile...OK

Registering Gruntfile tasks.
Initializing config...OK

Registering "grunt-casper" local Npm module tasks.
Reading /Users/user/project/node_modules/grunt-casper/package.json...OK
Parsing /Users/user/project/node_modules/grunt-casper/package.json...OK
Loading "casper.js" tasks...OK
+ casper
Loading "Gruntfile.js" tasks...OK
+ test

Running tasks: test

Running "test" task

Running "casper:test" (casper) task
Verifying property casper.test exists in config...OK
Files: tests/browser/_util.js, tests/browser/basics.js -> tests/logs/browser.xml
Options: test, engine="slimerjs"
Arguments: (none)
Preparing casperjs spawn
Spawning casperjs with args:  [ 'test',
  '/Users/user/project/tests/browser/_util.js',
  '/Users/user/project/tests/browser/basics.js',
  '--engine=slimerjs',
  '--xunit=tests/logs/browser.xml' ]
Found PhantomJS Executable /Users/user/project/node_modules/grunt-casper/node_modules/phantomjs/lib/phantom/bin/phantomjs
Found SlimerJS Executable /Users/user/project/node_modules/slimerjs/lib/slimer/slimerjs
Found CasperJS Executable /Users/user/project/node_modules/grunt-casper/node_modules/casperjs/bin/casperjs>>
Casper Task 'casper:test' took ~112ms to run
Warning: Task "casper:test" failed. Use --force to continue.

Aborted due to warnings.

package.json:

{
  "devDependencies": {
    "grunt-casper": "~0.4.2",
    "grunt": "~0.4.5",
    "slimerjs": "~0.9.5"
  }
}

Any suggestions on how to debug? --verbose doesn't seem to reveal anything. Cheers!

[4lun]

Ok figured it out, it couldn't locate the path to Firefox. This got it working:

export SLIMERJSLAUNCHER=/Applications/Firefox.app/Contents/MacOS/firefox