ASE does not have any wizards so you must be using some sort of GUI/tool/application.
What GUI/tool/application are you using? PowerDesigner? Sybase Central? Sybase Control Center? Something else?
Can you *connect* to the ASA and ASE instances with this GUI/tool/application? [Forget the 'import' operation for the moment ... and verify you can just *connect* to both ASA and ASE.]
Also, what is the actual/complete error message?
NOTE: I don't use GUI/tools so depending on the error there may not be much more I can assist with.