Hi Avery
In Sequencer, on the TakeID item, look under the Scene Control tab (next to Template Data). There is a Preview Frame setting there too, and if you have changed your Preview frame since copying the scene into Sequencer, it might not have updated, so it's not at the frame you expect. Either change it, or copy the scene again.
Hope that helps,
Simon
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Simon Latus
Simon Latus Media Ltd
United Kingdom
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