Well, I got back to XSI today, and rewrote the IK sampler a different way to avoid the problems I’d been getting whilst trying to sample into another ActionSource. It now means there are 2 completely different paths through the exporter, rather than IK sampling being an extra preprocessing step. Luckily, the new approach works beautifully, so I’ll be able to release a new version of the exporter now. 😀I just need to tidy up the material exporting a little, but that’s no biggie.