i have writtent a small multi thread com interop class and using it with vb6, which is working fine on the system i am programmin, but when i am trying to use the app else where, it open fine, but error out unexpectedly, the error shown by windows is

Code:
Description:
  Stopped working

Problem signature:
  Problem Event Name:	CLR20r3
  Problem Signature 01:	ftp mp3 bot v1.0.exe
  Problem Signature 02:	1.0.0.0
  Problem Signature 03:	4e3aa429
  Problem Signature 04:	mscorlib
  Problem Signature 05:	2.0.0.0
  Problem Signature 06:	4d8cdd0e
  Problem Signature 07:	e39
  Problem Signature 08:	1e8
  Problem Signature 09:	System.Reflection.Target
  OS Version:	6.1.7601.2.1.0.1296.17
  Locale ID:	1033

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please help!