Redmine

My company is using bitnami-redmine-1.3.0-1,I want to upgrade it to Redmine-2.2.0. So I installd Redmine-2.2.0 on CentOS-5.6_x64, And imported database,it runs good,Then I added a new issue,The number of the issue became #0.After that ,When I upgraded the issue,or added new issues and new projects ,I got a Redmine 500 error.

My environments of Redmines:

1.Redmine 1.3.0:
CentOS 5.6_x64
Bitnami-redmine-1.3.0-1

2.Redmine 2.2.0:
CentOS 5.6_x64
Redmine-2.2.0
Ruby-1.9.3
Rubygems-1.8.24
Rails-3.2.9
MySQL-5.5.28
Apache-2.2.3
Phpmyadmin-2.11.11.3

There is no plugins in both Redmines.

The attachment is my log file.

Is there anyone be so kind to help me with this question? Thank you very much.