Arbaro for Windows problem.

I was trying to export some complex trees into Wavefront .obj. However Arbaro failed to do that. It stops in the middle of process and never ends the job. Program doesn’t hang and pc indicates having enough free ram and cpu resources. Less complex objects are exported properly. It seems that java machine assigns too less memory for Arbaro. This problem is described in readme but i think the given solution works only for unix based systems.
Had anybody experienced the same problem with arbaro on WinXP and found the way out?