Illegal attempt to associate a collection with two open sessions

[Martin Palatnik]

I have the following problem.

I'm using session-per-conversation pattern through burrow. Using
conversations i have a session that remains open between a few
postbacks and in that page i store an object X in the asp session
(using Lock) . On another page i want to associate the same object X
with another nh session and i get an exception "Illegal attempt to
associate a collection with two open sessions" (the object has a
collection inside it).

How can I solve this problem and still use conversations?

[Ayende Rahien]

you have to evict it from the first session