Redmine

Linux redmine 3.2.0-4-amd64 #1 SMP Debian 3.2.54-2 x86_64 GNU/Linux
mysql Ver 14.14 Distrib 5.5.37, for debian-linux-gnu (x86_64) using readline 6.2

Hi, I have spent some time searching and am not able to find a solution. The issues that I have found that are similar have not pointed me to a workable solution.

Steps to Reproduce: In web browser ( tested with Safari and Chrome) log in and go to the profile page.
Click Edit to edit profile.
Add in an Avatar graphic. I selected a PNG.
Save the profile

Expected Results:
New Graphic will show for the profile that was edited.

Actual Results:
Profile Avatar image has a question mark and no image. However, if I click on the profile avatar I am taken to a page that displayed the image I added to the profile.

The attachment ID happens to be '20' The URL myURL/redmine/people/avatar?id=20&size=64 gives a 500 error however the URL myURL/redmine/attachments/20 shows the image I expected.

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Environment:
Redmine version 2.5.1.stable
Ruby version 1.9.3-p194 (2012-04-20) [x86_64-linux]
Rails version 3.2.17
Environment production
Database adapter Mysql2
SCM:
Subversion 1.6.17
Git 1.7.10.4
Filesystem
Redmine plugins:
redmine_agile 1.3.1
redmine_app__space 1.0.1
redmine_app_timesheets 1.3.11
redmine_contacts 3.2.17
redmine_issue_checklist 2.0.5
redmine_monitoring_controlling 0.1.1
redmine_people 0.1.8
redmine_watcher_groups 1.0.1
redmine_zenedit 0.0.2