Since your question refers specifically to Samplitude I wonder whether you might receive more replies if you register and post to the dedicated Samplitude Forum here?
I don't know if it's the same problem, but one has been raised by Krazet on the Samplitude forum.
"When I open a project the horizontal VIP meters are responding as are the mixer meters. However many times I noticed the track editor metering isn't responding when first opening a project. The only way to get it working is to open the mixer and the meters kick back in."
Does this help?
Here is the link, but you need to be logged in to see it: