Hi, 

try to change your memory-map - the .ldi file - so that the start
address of the rom_vectors-section - the second parameter inside the
brackets - gets bigger. 0x20000 should work. 
This method worked for me when I had a very similar problem. When doing
this you give the stub more room to live, your problem may result from
overwriting parts of the stub by loading the application.

-----------------------------------------------------
i.A. Andreas Bürgel     GenoLogic GmbH
     Software Engineer  Joseph-von-Fraunhofer-Str. 13
                        D-44227 DORTMUND
                        Germany               
                        
     ab@genologic.de    phone  +49 (0) 231/477349-0
                        fax    +49 (0) 231/4761234