forever list, and other commands, hang after starting with --spinSleepTime 30000 --minUptime 10000

./node_modules/.bin/forever start --spinSleepTime 30000 --minUptime 10000 index.js -c tst_config.js

after starting with the --spinSleepTime 30000 and --minUptime 10000 arguments list and seemingly all other commands hang.

node 6.7.0 and 4.6.0, latest foreverjs as well as 0.14.3, latest Mac OS X and Ubuntu 14.0.4