migration from 7.3 to 7.4

[Catalin Kormos]

Hi everybody,   I'm trying to upgrade a db from sapdb 7.3 to 7.4; i tryed to follow the steps described in the document found at http://www.sapdb.org/7.4/pdf/migration73_74eng.pdf; at step 4 "util_execute migration" i receive an sql error, which i ignored, and when i reached the step 12, "param_checkall" i received another error, "ERR_MIGRATE, migration not possible" (something like that), an that was the end; i could't do my migration.   Could anyone help me?   Best regards Catalin Kormos