Error with generateChangeLog


we are using Sybase SQL Anywhere version and liquibase 3.0.0-SNAPSHOT. When we try to generateChangeLog we get the following error:

Liquibase generateChangeLog Failed: Error executing SQL select CONSTRAINT_NAME,CONSTRAINT_TYPE from information_schema.constraints where constraint_schema=‘DBA’ and constraint_catalog=‘CURRENT’ and constraint_type=‘UNIQUE’ and table_name=‘DocumentFormAgencyCategory’: [Sybase][JDBC Driver][SQL Anywhere]User ID ‘information_schema’ does not exist

I have tried using both the jodbc.jar and the sajdbc.jar that ships with Sybase SQL Anywhere and both give this error.