MS project problem with Open PS

Hello all,

I need experts help with an issue I'm facing when I try to download from PS using open ps addon in MS Project 2007, it connects fine with SAP system and I can edit the setting with no problem, but when I click on download the MS project crashes and restarting.

windows 7 environment
SAP Netweaver 7.4 GUI

Microsoft project 2007

open PS addon v4.2

Thanks