Try-catch Error Handling -- Display Line Number?

I need help finding where an error is occuring in my code. I use a
try-catch block like this in my global.asa:

} catch (e) {
Application('errormsg') = ("An exception occurred in the script. Error
name: " + e.name
+ ". Error description: " + e.description
+ ". Error number: " + e.number
+ ". Error message: " + e.message); }

And this is what is SOMETIMES returned when I display
Application('errormsg'), the rest of the time, it works:

An exception occurred in the script. Error name: Error. Error description:
Path not found. Error number: -2146828212. Error message: Path not found

But I don't know which path is not found! (I'm using the filesystem object
and importing data from a file into SQL.) Is there a way to display the
line number of the error or more details? Or do I just have to try to catch
the error by going through each bit of code?