NaN error on gemini7 when circularising Rocket

[mcDandy]

Game Version​

v2026.9.7.5402

Operating System​

Windows 11

What Happened​

18:21:29.860 ERROR Update task failed for vehicle(s): Gemini7
System.ArgumentOutOfRangeException: k ('NaN') must be greater than '-1'. (Parameter 'k')
Actual value was NaN.
at System.ArgumentOutOfRangeException.ThrowLessEqual[T](T value, T other, String paramName)
at System.ArgumentOutOfRangeException.ThrowIfLessThanOrEqual[T](T value, T other, String paramName)
at KSA.MathEx.EllipF(Double phi, Double k)
at KSA.PhysicsBubble.SolveEulerPoinsotAsymmetric(Double analyticDeltaTime, double3 pmiPaf, double3 bodyRatesBody, doubleQuat paf2Body, doubleQuat body02Cce)
at KSA.PhysicsBubble.ApplyEulerPoinsotRotation(UniverseTime simTime, VehicleUpdateState vehicleState)
at KSA.PhysicsBubble.ApplySingleVehicleMotion(VehicleUpdateState vehicleState)
at KSA.PhysicsBubble.DoWorkAndStageResults()
at KSA.PhysicsBubble.RunStep()
at KSA.BubbleStepJob.ExecuteOnBubble(PhysicsBubble bubble)
at KSA.IBubbleJobNoPayload`1.KSA.Concurrency.IBatchJobNoPayload<TPayload,KSA.PhysicsBubble>.Execute(PhysicsBubble bubble)

What Was Expected​

For maneuwer to get created (happened) and no errors (did not happen)

Reproduction Steps​

1. launch the default rocket from starbase OLM a
2. burn so result parabola is 337 km AP prograde
3. attempt to do full orbit - stage when about to run out of fuel
4. finish creating orbit
5. open orbit planner - circularise AP
6. enable preview
7. click create. AP is at 300 KM but it shows 8000 KM
8. Click create again (Yes I clicked the button twice without changing settings)
9. follow plan by clocking burn.
10. Instead of waiting 20 minutes for maneuver or speeding up console gets spammed by something which looks unrelated.
11. You can wait 20 minutes but log file is rapidly filling with errors about gemini7

Reproduction Rate​

once

Additional Info​

• Video/Screenshots: [Link or attach files]
• Save File: [Attached/Link to save file if relevant]
• Other Notes: [Any other relevant details]

 

[mcDandy]

Save file probably half a minute or so after it happened