After a lot of sweat, i managed to upgrade my OS, and install the latest version 1.6 of CrbonLib.
i could install the V.6 standard edition of 4th Dimension.
now i managed to open the database.
but when selecting a certain file it displays the following message: " An attempt has been made to read or write beyond the end of a file, the database cannot be used"
although i checked the structure of that file, all is OK
Any ideas????????