Open-AudIT

Hi,
Firstable I would like to thank the Openaudit community for the great work on devoloping this worderful platform. I really think this open source platform is better than more commercial products... But we found some problem in our domain.. So I let me uderstand:
we had successfully createad an openaudit computer with linux ubuntu 7.10, mysql 5.0 apache2.0 and php5.0.. After that we had created a simple AD policy that is executed during login script of every domain user in which I let dowloaded the audit.vbs script and the audit.config in temp directory of the logon-user, the vbscript is executed and after this, these files are deleted.
So we haven't got any problem regarding the permission, regarding the schedules and regarding firewalls.....So Everything should run fine.... But in some computers we had got an error: during the execution of the vbscript appears the error I enclosed.
We had got something like 150 computers in ours domain, but only 75 of them we can successfully collect informations.. .What about this?
I tried to let created an error- log file but after few seconds cscript or vbscript hang up, and no log is generated. The strange thing is when in the same computer I've got this error if i run the vbscript in verbose mode, there are no errors and everything works fine!!!!!!!!
Could you help me ?
thanks in advance