attached is the full thread dump during the IDE
lockup, as well as the stacktrace of the initial
exception.

After switching configurations in midp project
(where the config's are associated with different
platforms), attached MOFID no longer exists
exception is sometimes thrown.  This is already a
known bug, but this time the exception caused the
Scanning Project Classpaths dialog to remain open
indefinitely.  Because this is a modal dialog, the
IDE is effectively locked, and unsaved data will
be lost (as killing the IDE is the only way to
close it). 

 I can't not reproduce 100% of the time, but it
does eventually reproduce.

The best way to try reproducing this bug would be:
-install the mobility pack
-create a configuration called nokia
-add nokia series 60 emulator platform and wtk
-associate nokia platform with nokia config, wtk
with defaultconfig
-create an object using the following lines as the
class definition

/*#nokia#*///<editor-fold>
//--public class Main extends
com.nokia.mid.ui.FullCanvas
/*$nokia$*///</editor-fold>
/*#!nokia#*///<editor-fold>
public class Main extends Canvas
/*$!nokia$*///</editor-fold>

Switching between configurations will sometimes
throw the exception/cause the deadlock.  The
project that i'm reproducing with has 5 different
configurations and each with a different platform
associated with it.  this might make it more
easier to reproduce as well.