Hello,
I've encountered, I think, the same kind of problem.
Here is how I managed to remove the contextual partial cache :
Frontend side, I got MyModule, with action 'show' in which I display a
_partial. This is the one that is contextual, depending on show action
parameters.
When removing a partial from the cache, using an internal cache id
(like mentioned on
http://www.symfony-project.org/book/1_2/12-Caching#chapter_12_sub_clearing_selective_parts_of_the_cache),
the operation fails if the partial is contextual.
I checked out the symfony cache dir, it seems symfony