Oracle Database Discussions

I've already tested Dataguard configuration on Oracle 10g Enterprise edition for Windows.
While configuring the same in Sun Solaris, I'm receiving this error:

ORA-01665: control file is not a standby control file

Steps I follow are as below:

1) Creating a password file on both databases (primary and standby)
2) Force logging primary db and shut it down. Take a cold backup of redo log files and datafiles.
3) Transferring them to Standby db.
4) Starting primary db in mount mode and creating a standby controlfile. Transferring standby controlfile to proper location defined in standby init file.
5) Start primary db in read-write mode and secondary db in mount mode using:

alter database mount standby database;

I receive this error while firing this SQL.

Can anyone please help me out solving the same.