I've tested your tankWithKF.jas.zip sample scene and it works fine. It also works for both renderers. Do you have the latest version of the script installed since Hiroto released some bugfixes?
From 2013? Yes. In the latest beta, the most recent f-linker does not even launch, giving
error: Object.getParameter() couldn't find parameter called A prm. name
error. I have really tried to be thorough in my script version use; the links I've found here and on Hiroto's site were last updated in '13.
Keep in mind that the only two people to see the rendering crash
are myself (two different machines) and Swizl. So far. No one else could or would contribute, except frank (for whom rendering movies worked fine). (Sorry to anyone I'm forgetting. I'm a little tired right now.)
This is why both Swizl and I both sent you crash logs.
But, like I said, I've created a few scripts using some of the same principles, which "work" (work up to rendering) on all versions of Cheetah, just fail to render movies. I first saw the render crashes with f-linker while I was developing the other scripts. In a way, my scripts are simpler, but they have the same render crash problem f-linker did.
Just to clarify: I can use f-linker with beta 17, but it is unusable with beta 18.
In all beta versions previous to 18, aside from the weird tag problem, all movie renders fail. This failure is the same with the scripts I've written, but my scripts work with all versions, aside from rendering, which always crashes.
Let me know what else I can contribute or send you.