RMAN-05541 error when duplicating database from consistent (cold) backup

I'm getting the following error when trying to duplicate and 11gR2 database.  I don't understand why it's error on archive logs when the database was in mount state when the backup was taken?

First I take a backup from the database in mount state, this finishes without any errors.

Recovery Manager: Release 11.2.0.1.0 - Production on Sat Jun 7 08:29:18 2014

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connected to target database (not started)

RMAN> startup mount;

Oracle instance started

database mounted

Total System Global Area    1620115456 bytes

Fixed Size                     2213816 bytes

Variable Size                939526216 bytes

Database Buffers             671088640 bytes

Redo Buffers                   7286784 bytes

RMAN> backup database;