Redmine

Hello all, I am doing an upgrade of redmine from an older server.

Old environment:
OpenSUSE
Redmine v1.1.3
Ruby v1.8.7 (p72)
Rails 2.3.5

gem list - 13 local gems

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As a step 1 I figured I would get the instance running on the new server (CentOS 6.5) first before attempting any upgrading. The new server is a test environment so open to try anything.

Using RVM I have setup a replica environment on the new server so I have the same version of Ruby, Rails, and all gems have been installed - also keeping the gem versions exactly the same (older). The files from the older server have been copied over to the new server (mysql is also copied to new server and has been updated in database.yml) and I am able to access via web.

I get the following error:
Application error
Rails application failed to start properly

I understand this is a pretty useless error. There are no errors in the production.log file...

I also considered starting from a new fresh install of Redmine and to get the data from the old instance into the new. What might be recommended for this upgrade process?

I was hoping to first get the instance running on the new server and then to follow standard upgrade steps.

Thoughts?
Perhaps I should not be using rvm?

Thanks in advance!