Error In Due Date Remainder

[shresthasudhir014]

I am currently developing project management system using Bitnami Redmine. I am using Redmine 1.4x version.
After i found your due date notification plugin, i was like, that's what i need in my project.

I copied your plugins to: C:\BitNami\redmine-1.4.7-2\apps\redmine\htdocs\vendor\plugins folder
So now, when trying to implement the plugin it doesnot even get migrated.

Problem:

I dont get what the problem with user.rb

Please help me