I'm trying to get some work done with the STRATUM program but I keep getting an error and I can't seem to figure it out. (I know it's not i-tree but I'm using i-tree too, I swear!)
Anyhow, I know I'm making some kind of really foolish mistake and just can't figure out what it is. It's been driving me nuts and I really need some help.
Anyway, here's the error that I keep getting.

It comes up after trying to import a Microsoft Access file on to STRATUM.
If you can help that'd be great.