Node version:

4.4.4

ShellJS version (the most recent version/Github branch you see the bug on):

0.7.0

Operating system:

OSX 10.11.5 El Captain

Description of the bug:

Typerror while using shell.exec

Example ShellJS command to reproduce the error:

java -jar CMDRunner.jar --tool Reporter --generate-png test.png --input-jtl results.jtl --plugin-type ResponseTimesOverTime --width 800 --height 600

I cannot find a simple command which reproduces the above issue, I am attaching a screenshot of the error message I am getting.