RuntimeError (can't modify frozen ActionController::Parameters):

[johnp2686]

I have installed redmine backlog plugin in redmine-2.5.1 ,enabled redmine-backlog module and click menu ,getting Error message(RuntimeError (can't modify frozen ActionController::Parameters):
)

[mtolava]

I have the same error :(
My redmine have this configuration

Redmine 2.6.0.stable.13840
Cuenta de administrador por defecto modificada True
Se puede escribir en el repositorio True
Se puede escribir en el directorio público de las extensiones (./public/plugin_assets) True
RMagick disponible (opcional) Exclamation
Conversión ImageMagick disponible (opcional) Exclamation

Environment:
Redmine version 2.6.0.stable.13840
Ruby version 1.9.3-p448 (2013-06-27) [i686-linux]
Rails version 3.2.21
Environment production
Database adapter Mysql2
SCM:
Subversion 1.6.17
Git 1.7.9.5
Filesystem
Redmine plugins:
dpi_cmi 0.0.3
notify_custom_users 0.0.6
planner 0.4
recaptcha 1.0.0
redmine_backlogs v1.0.6
redmine_evm 0.9.1
redmine_git_hosting 0.6.2
redmine_google_calendar 0.2.0
redmine_inline_note_images_plugin 0.0.1
redmine_knowledgebase 2.2.0
redmine_monitoring_controlling 0.1.1
redmine_plugin_views_revisions 0.0.1
redmine_slack 0.1
redmine_theme_changer 0.1.0
role_shift 0.1.0b
scrum2b 2.0
sidebar_hide 0.0.2
timelog_timer 2.0.0

[joshuacox]

second this one, I just turned off the burndown, and then the taskboard and backlogs pages started returning 500 errors, turning it back on doesn't help either

[smarzougui]

Any help for the fix ?
Same issue with the Plugin ... :(