Hi im try to migrate a database created in FB1.5 to FB2.1 but when i did it i had some errors.

1.- In a PC with FB 1.5 i create a Backup of the database
database15.fbk

2.- i copied the database15.fbk to another PC but with FB 2.1 and i
restore like database21.fdb

3.- i can see the table and triggers but when i try to access to any procedure bring a error message said

SQL TEXT
select pr.rdb$procedure_name,
pr.rdb$procedure_source,
pp.rdb$parameter_name,
pp.rdb$parameter_type,
fs.rdb$field_name,
fs.rdb$field_type,
fs.rdb$field_length,
fs.rdb$field_scale,
fs.rdb$field_sub_type,

ERROR MESSAGE
Cannot transliterate character between character sets.
Cannot transliterate character between character sets.