Contexte installation probleme

Hello,

I try to install many time "context 6.x-3.0" on my drupal site, but it doesn't appear anywhere in Drupal administration.

I try to install it on a news drupal 6 site and it work perfectly...

It may come from one of my module ?

Is there any module in this list that doesn't work with the module "context" please ?

Administration menu
Addresses
Addresses - CCK
Addresses - Phone/Fax
Advanced help
Automatic Nodetitles
Backup and Migrate
Token
TokenSTARTER
Content
Content Copy
Content Taxonomy
Content Taxonomy Autocomplete
Content Taxonomy Options
Content Templates
Email
Fieldgroup
FileField
Image crop
ImageField
ImageField Tokens
Link
Node Reference
Number
Option Widgets
Text
Chaos tools
Date
Date API
Date Popup
Date Timezone
FileField Paths
ImageAPI
ImageAPI GD2
ImageAPI ImageMagick
ImageCache
Imagecache Canvas Actions
Imagecache Color Actions
Imagecache Text Actions
ImageCache UI
jQuery UI
jQuery Update`
Wysiwyg
Views
Views Custom Field
Views GroupBy
Views UI

Thanks a lot !