In current Toad for Sybase 1.1.0.695 version, select SERVER and Dropdown database.
I drill to Tools | Export | Database and checked selected tables.
Build script button is clicked.
The following is displayed:
Build DDL Script window
Process completed
Progress Bar (Long green bar, looks complete.)
Connection connection_name lost
Read data from database. <Close>
WORKAROUND:
None
STATUS:
Waiting for fix in a future version of Toad for Sybase.