The carnival, due to be held in July, is one of the country's biggest celebrations of Afro-Caribbean culture. But a community group objects to the way it is being run and that the main events will now be in Portland Square, outside St Paul's itself.
Artistic co-ordinator Julz Davies says he's stepping down because he says local people have not been kept informed.
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After a fine and sunny evening, most places will have another dry and clear night, though it will be a little warmer than last night.
The Council is deciding between two locations for the arena. The contractor has suggested work could be cheaper than first thought.
Maisie, who grew up in Saltash, stars in Oscar-winning film The Silent Child.