Hi, we have a relatively large AIR app under FB4 and we're trying to track down a memory leak using the flex profiler. We have the profiler performance profiling turned OFF and memory profiling ON. Problem is, with stack tracing turned OFF, there's very little useful information in the profiler output, and with it turned ON, the profiler crashes. The crash happens when trying to open an object instance. It crunches away for about 10 minutes, then stops with the "Java heap space" error seen in the screen capture below. System is a MacBook Pro with quad core i7 @ 2.8 GHz with 8 GB RAM. Crash happens on both WinXP under VMware, and on the Mac side. Any ideas on how to get the flex profiler to work? Thanks.