error 1136

Hello friends, We just upgrade our production machine from IDS 7.12 to 7.30 UC6. Then we have to recompile all the 4gl files to recreate respected 4ge files. When we recompile the files, it runs well. There's no error message. But when we try to run the 4ge files, there comes a message "memory fault (core dumped)". And it says that the error number is 1136, which tells that window is to fit on the screen. But the 4ge files work well on our development machine. Any suggestion ? TIA, --garnadi