I have the same error message. I am running a batch file that calls a SQL file that runs a pretty simple update script. When I run the script manually, it runs fine. The same syntax that applies to the call to this script is used to call multiple other scripts on a nightly basis, and the others all work. Here is the error message (which I know is not very helpful by itself):

Incorrect syntax near 'ÿ'.

Like I said, the same batch file contains calls to 6 SQL scripts, all with the same credentials and syntax.