sql server 2012 - Collation Error Executing Stored Procedure From Java -

i trying execute stored procedure in sql server 2012 using jtds driver version 1.3.1. stored procedure executing runs find when executed management studio, following error when trying executed java app.

java.sql.sqlexception: cannot resolve collation conflict between "sql_latin1_general_cp1_cs_as" , "sql_latin1_general_cp1_ci_as" in equal operation.

i have hit dead end far go next. has experienced before, or know cause is? thanks!