Cannot use named and unnamed parameters in the same command

I'm trying to import data to my MySQL DB using Toad. I'm importing the file as I always do, but suddenly I get this message:

Cannot use named and unnamed parameters in the same command.

W开发者_JAVA技巧hat does this mean? I've googled, but did not get any wiser.

Here is the entire error message:

Import Started [11.07.2011 10:16:17] Processing "somefile.csv" into "db1.table1"

Reading from file somefile.csv

Error: Cannot use named and unnamed parameters in the same command.

Error importing data, please check file format options: Cannot use named and unnamed parameters in the same command.

Import Finished [11.07.2011 10:16:19]