Exchange Attributes error

Using https://www.techrepublic.com.com/5208-6230-0.html?forumID=3&threadID=187209&start=0

I keep getting “Exchange attributes error : -2147016657”, any pointers on what that may be?
I would also like to create within a specific OU via the .csv file, actually nested OU. Is that possible?
And as it’s only 362 days until Christmas; a pointer for how to create a home directory as well would be great.
I’m trying to teach myself via Don Jones’ “Managing Windows with VBScript and WMI”. Any suggestions for books that would be helpful?

Thanks all.