>This is the command i am using:
>
>gbak -v -c -p 8192 -bu 8192 "e:\database.gbk" "e:\database.fdb"

Try adding:

-u <username> i.e. sysdba
-pa <password> i.e. masterkey

so you would have

gbak -v -c -p 8192 -bu 8192 -u SYSDBA -pa masterkey "e:\database.gbk"
"e:\database.fdb"

Rgds

Si Carter
http://www.tectsoft.net/