Can't create a group of ressources

[Yaaaxx]

Version : V25.0.69

When I click on the plus button of a group, I have the following error in the console :

Uncaught TypeError: can't access property "package", s is undefined
    Fo FormWindow.ts:91
    He ResourcesWindow.ts:29
    handler ResourcesWindow.ts:109
    internalRender Button.ts:184
    internalRender Button.ts:178
    render Component.ts:500
    renderItem Component.ts:1013
    renderItems Component.ts:987
    forEach Collection.ts:281
    renderItems Component.ts:986
    internalRender Component.ts:440
    render Component.ts:500
    render Toolbar.ts:63
    renderItem Component.ts:1013
    renderItems Component.ts:987
    forEach Collection.ts:281
    renderItems Component.ts:986
    internalRender Component.ts:440
    render Component.ts:500
    renderItem Component.ts:1013
    renderItems Component.ts:987
    forEach Collection.ts:281
    renderItems Component.ts:986
    internalRender Component.ts:440
    render Component.ts:500
    renderItem Component.ts:1013
    renderItems Component.ts:987
    forEach Collection.ts:281
    renderItems Component.ts:986
    internalRender Component.ts:440
    internalRender Window.ts:242
    render Component.ts:500
    renderItem Component.ts:1013
    initItems Component.ts:294
    fire Observable.ts:234
    add Collection.ts:95
    add Collection.ts:85
    internalSetHidden Window.ts:398
    set hidden Component.ts:611
    show Component.ts:653
    handler Main.ts:272
    internalRender Button.ts:184
    internalRender Button.ts:178
    render Component.ts:500
    wrapLI Menu.ts:230
    renderItem Menu.ts:195
    renderItems Component.ts:987
    forEach Collection.ts:281
    renderItems Component.ts:986
    internalRender Component.ts:440
    internalRender Menu.ts:129
    render Component.ts:500
    internalSetHidden Menu.ts:375
    set hidden Component.ts:611
    show Component.ts:653
    onMenuButtonClick Button.ts:202
    internalRender Button.ts:175
    render Component.ts:500
    renderItem Component.ts:1013
    renderItems Component.ts:987
    forEach Collection.ts:281
    renderItems Component.ts:986
    internalRender Component.ts:440
    render Component.ts:500
    render Toolbar.ts:63
    renderItem Component.ts:1013
    renderItems Component.ts:987
    forEach Collection.ts:281
    renderItems Component.ts:986
    internalRender Component.ts:440
    render Component.ts:500
    renderItem Component.ts:1013
    renderItems Component.ts:987
    forEach Collection.ts:281
    renderItems Component.ts:986
    internalRender Component.ts:440
    render Component.ts:500
    initComponent Modules.ts:117
    ExtJS 5
FormWindow.ts:91:30

I tried to reset the cache of the client and the server but nothing change.

[Yaaaxx]

And this is the same for editing a group of ressource