You are running a new version of the database server, and you just opened a database for the first time with this level of the software. The database server tried to upgrade the database automatically, probably by defining an additional system-catalog table. An unexpected error occurred. Check the accompanying ISAM error code for more information. If the error recurs, note all circumstances and contact IBM Informix Technical Support.
Database servers after Version 5.01 do not use this error message.