Thank You John, thank You Paul for your contributions. I think, I solved that problem partially. Look the attachment.
I like to use Keepas on different systems. On my laptop I use win 7 and Linux Mint. I created a database on the WIN 7 system and tried to copy the database to the Mint-sytem. I could not open this database in the Linux system, but Icould open it in the original place on the windows drive. Is there any opportunity to solve this problem without using a cloud-drive or a portable Keepas using an usb drive. I like to open a copied database on any system i use.