Now multianswer questions are working too.
Too complicated !!
// database (backup_version) to determine whether upgrades should
// be performed (see db/backup_*.php)
-$backup_version = 2003081800; // The current version is a date (YYYYMMDDXX)
+$backup_version = 2003082300; // The current version is a date (YYYYMMDDXX)
-$backup_release = "0.8.8 alpha"; // User-friendly version number
+$backup_release = "0.8.9 alpha"; // User-friendly version number