Too Many heap Sections - on Building to Android


I exported the dll files from a jar file I build from the Facebook SDK for android.

now I can access the SDK in unity and this is all ok, but when Building to Android Platform, I get the “Too many Heap Sections Error” and then Unity Crash…

even if I dont call any class from the sdk. just beeing in the Project assets folder is enough to get unity to crash.

do any one know how to solve this , or what is actully happening here ?

to be more specific :
I did what I read here in one of the answers:

Judging from this forum thread, this might be a problem with Mono’s garbage collector.

Which version of Unity are you using?