Redmine plugin install (RedmineCRM Finance) results in 503

Question

So my problem is that for some some reason installation of some plugins kills my bitnami redmine "permanently" (thin_redmine and thin_redmine2 stops after like 5 seconds).

The plugin which most recently did this is Finance Plugin from RedmineCRM. Version should be okay. http://www.redmine.org/plugins/finance

Method I used (note that I added :migrate in the second line compared to their website (Is this the problem?)):

bundle install --without development test
bundle exec rake redmine:plugins:migrate NAME=redmine_finance RAILS_ENV=production

Am I missing or wrongly doing something? (Please note that I'm not really an expert in this field so I mainly go after how to-s.)

Are there anymore prerequirements for this (besides a very basic working redmine) e.g. I did not set up e-mail notifications, can stuff like this cause the problem?

Answer 1

Unfreez the gemfile. It solved the problem.