OK,
I can't diagnose your problem with your install script, but this should
work:
from you ACEDB directory, the one with the ./bin and ./database
subdirectories type
./bin/xace .
or try form the directory above your database directory type
/path/to/xace .
this should solve your~:
>ACEDB="/usr/local/acedb_43" but the program still could not find the
>database ???
Mazda