Internal error on Redmine 2.5.1.stable.13136

on start, sory for my english. After install i have error on issue.

Started GET "/issues/29" for 192.168.1.143 at 2014-05-16 07:45:00 +0200
Processing by IssuesController#show as HTML
Parameters: {"id"=>"29"}
Current user: m.jasinski (id=5)
Rendered issues/_action_menu.html.erb (2.9ms)
Rendered plugins/redmine_close_button/app/views/issues/_close_button.html.erb (0.7ms)
Rendered plugins/redmine_better_gantt_chart/app/views/issues/_show_estimated_duration.html.erb (3.6ms)
Rendered issues/show.html.erb within layouts/base (19.4ms)
Completed 500 Internal Server Error in 54.5ms

ActionView::Template::Error (bad value for range):
1: <tr>
2: <th class='duration'><%= h l(:field_duration)%>:</th>
3: <td class='duration'><%= issue.duration if issue.duration > 0 %</td>
4: </tr>
lib/redmine/hook.rb:111:in `block in render_on'
lib/redmine/hook.rb:61:in`block (2 levels) in call_hook'
lib/redmine/hook.rb:61:in `each'
lib/redmine/hook.rb:61:in`block in call_hook'
lib/redmine/hook.rb:58:in `tap'
lib/redmine/hook.rb:58:in`call_hook'
lib/redmine/hook.rb:158:in `call_hook'
app/views/issues/show.html.erb:68:in`_app_views_issues_show_html_erb__1114220661511245834_70207009979620'
app/controllers/issues_controller.rb:128:in `block (2 levels) in show'
app/controllers/issues_controller.rb:125:in`show'

Start by reproducing GET /issues/29 and read the failure through IssuesController#show and app/views/issues/show.html.erb. Inspect the plugin-rendered view named in the trace, plugins/redmine_better_gantt_chart/app/views/issues/_show_estimated_duration.html.erb, to locate the bad range value. Done means the issue page renders without the 500 error.

Written by the indexing model from the issue text.