Initial permission error

for me it didn'twork, the config of the plugin is ok, I installed the latest version RC8(r1496) and I have
Invalid parent ID error see the image attached.

So I don't have access to the manager.
In front-end I have access to categories, items, I just have to rebuild all the menu.

Could you tell how to troubleshoot this problem?
I am testing localy the migration for my website.

Please read this joomla related article on the topic:

www.wincert.net/tips/joomla/2599 ... -parent-id

I redo all the migration, I didn't have problem with flexicontent about "initial permission"

it seems that the error occurs after an update of joomla (2.6 to 2.7)
I finally did the action describe above but with no success.

Do you have more idea for the troubleshooting?

To find what is happening, i will need access to the site

I am doing the migration localy...
I will install the site online on Friday, I will send you access when it will be ok.

At the end I solved the problem, I did too much manipulation to know exactly what was wrong but it seems that main problem was caused by the php version on the server. After an upgrade all problem disappear.