WSOD when editing or creating node flag

Hi everyone,

I'm looking for some help concerning a bug i have encountered trying to work with flag module.

Trying to create a node flag from the administrator interface is giving me a WSOD. This is strange, since any other type of flags can ben created without any trouble.
I'm able to manage fields of the example bookmark flag, but clicking edit tab give me the wsod again.

I have read a similar issue caused by some sort of conflict with Token, but i haven't installed this module on my site (yet).

I have checked recent logs, but there is nothing showing up that can be related to this problem.

I am out of idea to solve this, hope you will find something to help me ;)

EDIT:

I had Token installed in fact... when disabling it, it solves the problem.

Similar issue was reported here: , however i am not sure a solution was found (i don't understand everything about what they were talking...)