What trips you up in VBScript?

Okay, if you’re reading this I’ll assume (for the moment) that you have at least a passing interest in VBScript. When you were (or while you are) learning VBScript – what topics gave (or give) you the most difficulty? What is or was the most difficult thing to grasp, or the hardest thing for you to put to use? Post a comment, right here in the blog, and let me know. I’ll tell you later what it’s for <grin>.