For Sybase ASE use the "Other SQL" dialect and write custom SQL queries. Sybase ASE is not supported by the visual query builder.
When a custom SQL statement is executed, EasyMorph simply passes the statement to the ODBC driver as is. If it crashes, it probably because of the ODBC driver. Just in case, can you please send the diagnostic information (including Windows events) described here: Diagnostic information to provide with support requests 💡 to support@easymorph.com.
Also, can you please try to execute the same SQL query using the same ODBC driver in another query tool on the same machine?