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"Error extending trajectory for Laythe" for certain launch times #3205

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leftfusion opened this issue Nov 19, 2021 · 5 comments
Closed

"Error extending trajectory for Laythe" for certain launch times #3205

leftfusion opened this issue Nov 19, 2021 · 5 comments

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@leftfusion
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Hi all, I'm running Principia, FARc and a few other mods on KSP 1.12.2.3167 on a MacBook Pro M1.

I set up a rocket for launch at KSC. When I switch to map view, things seem normal. During launch, when I switch to map view again, a Principia dialog appears with:

Error extending trajectory for Laythe. Error trying to fit a smooth polynomial to the trajectory. The approximation error jumped from +2.30409398201086163e-03 m to +8.35707936646116650e+03 m at time 2000-01-19T18:40:00,0000000000000000 (TT). The last position is {+2.82934834163834190e+10 m, +5.89477737293942795e+10 m, +3.18125881596906483e+08 m} and the last velocity is {-3.61413290050426031e+03 m s^-1, -1.47439688224631891e+03 m s^-1, +9.66053147377180750e+01 m s^-1}. An apocalypse occurred and two celestials probably collided because your solar system is unstable.

Reverting to launch pad and repeating the launch + switch to map view consistently reproduces this error for me.

Here are the logs and the save. The sequence of actions I described starts at around 10:50:00.
@leftfusion
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Curiously, if I time-warp a few hours into the future before launching, going to map view no longer causes this error.

@pleroy
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pleroy commented Nov 19, 2021

You are using a mod that makes your solar system different from the stock one, and unstable. You may or may not be able to patch it using a Kopernicus configuration, details here.

@leftfusion
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leftfusion commented Nov 19, 2021 •
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Ah, I just noticed installing Parallax (terrain shader mod) from CKAN auto-installed Kopernicus, so didn't realize the retrobop config needed to be applied.

I'd like to fix my existing save -- would this be one possible way?

  1. update Kopernicus configs
  2. delete principia.ksp_plugin_adapter v1.0.0.0 = True, Principia = True and the PrincipiaPluginAdapter scenario in persistent.sfs
  3. load the save again

I assume vessels would jump to weird places ("My vessels are all over the place"), but that is OK with me right now.

@pleroy
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pleroy commented Nov 19, 2021

The configuration of the solar system is recorded in the save, so you'll have to start a new save after applying the patch. There is no way that this can be fixed by editing the save. If you choose to edit your save, don't come to us for help.

@leftfusion
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Your response is appreciated and your policy understood.

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@pleroy @leftfusion