Here's what I suspect:
- I installed Poser13 last April 7
- an update took place on April 12th, around 23h30

And if I take a look the the "gpu" folder, in the "Runtime" folder, but the one located where the executable lies, there are two binary files with the same date/hour of modification:

It's probably already managed in Poser, at a programming level but I suspect that these files are automatically rebuilt if they are missing or invalid.

𝒫𝒽𝓎𝓁

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