Problem after upgrading to RC 2.0: no form in article

Hello!
I've just upgraded:
- component from RC 1.9 to RC 2.0
- cf plugin from RC 1.8 to RC 2.0

As soon as I've done it, in every article where I had the form displayed (only for logged in users), I've the code {chronoforms}formname{/chronoforms} shown instead of the form itself. Just as if I was not logged in.
I'm using J1.5.23
I've tried to open and resave my articles but with no changes.
I've checked the forum but could not get any answer or clue.
What should I do?
Many thanks
Fred

Oooops my fault.
After double check, I had to uninstall plugin RC 1.8 to be able to upgrade to RC 2.0 then I forgot to enable the plugin...
Hope it will still help someone!!

Oooops my fault.
After double check, I had to uninstall plugin RC 1.8 to be able to upgrade to RC 2.0 then I forgot to enable the plugin...

sometimes it happens))