Hello folks;

I am slowly going mad...

Here is the situation:
I am quite new to Oracle (say 5 months of professional experience)
I have made a vbscript to automate the daily exports on the Windows servers.
Out of our 10 Windows servers, the script works flawlessly on 7 of them.
But on 3 of the Windows servers, I get the following ODBC-error when running the script in a DOS-prompt:
E:\Oracle\admin\vbs\expfull.vbs(130, 1) Microsoft OLE DB Provider for ODBC Drivers: [Microsoft][ODBC Driver Manager] Driver's SQLAllocHandle on SQL_HANDLE_ENV failed
I use the Oracle ODBC-driver "Oracle in Orahome"

Also, when I try to test a connection to the database In Windows itself with the "test connection" button in the ODBC-screen, I get an similar error as displayed in the attached file. (see file)

As the script works fine on most servers, I am pretty certain that this is not a vbscript problem, nor a database problem.
But what could it be then?
I've already lost hours and hours in trying to find what it is, so any help would be greatly appreciated.

Many thanks in advance;