Informix 11.70 with DP9, backup preview fine but actual backup fails

Hi, I trying to backup informix instances on Data Protector 9

Client is installed last version patches, doing FS backups well.

But for DB, It just fail with error: 

The database reported error while performing requested operation.
Message number -156 not found.

"Preview backup" ends without problems. 

Informix running on SunOS 5.10

I´m doing backup with root user and root group cause informix user give me permissions error, the root user is in informix group too.

Please Help!! .. thanks!