Answered Collections 3.4.0 causing an endless loading of the manager page

Modx 2.4.2
Collections 3.4.0
PHP : 5.5.31
mysql : 5.5.47

I just update Collections 3.3.0 to Collections 3.4.0.

When I click on the Collections Icon in the ressources tree, it causing an endless loading of the manager page and I cannot acces to the collectionContainer.

Someone has a solution?

Thanks for your help

Is there anything helpful in the MODX Error Log?

No, nothing in the error log.

One thing, for my installation the core is out of the root. Is this may be the cause?

Thank