Sporadic audio playback issue on Voxeo Prophecy (audio playback conflict)

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Prophecy version: 14.5.2

I am using the following CCXML line to playback audio files over a phone call:

<dialogstart src="'NoResponse.wav'" type="'audio/wav'"/>

This works the majority of the time. However sometime a few threads will begin having errors during the playback of an audio file, this doesn't seem to be tied to any specific audio file. In the logs I get a SIP event error with the following details (only showing relavent bits from log):

CTStream/Failed to read from VIO accessor. CTStream/Transcoder:failed to read from backbone. Reading from playback stream has failed. name="error.dialog.notstarted" reason="audio playback conflict"

Any information the leads to the resolution of this issue would be greatly appreciated. I have not found any information on this in the Prophecy documents.

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