Which version changed ODESolution interface?

[davorh]

Unfortunately, I have stored a large and time-consuming solution (4D array, size ~ 4GB) from DifferentialEquations.jl package in JLD2 format. Meanwhile, I upgraded Julia and reinstalled the packages. Now when I try to read in a file with jldopen and try to access an object named as original variable "solve", I get this error shown below. To restore it, JLD2 needs the correct package preloaded. Can you tell me what version of DifferentialEquations.j changed the ODESolution interface so I can restore the saved solution?

┌ Warning: read type ODEFunction{false,SciMLBase.AutoSpecialize,Main.#BK,LinearAlgebra.UniformScaling{Bool},Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,typeof(SciMLBase.DEFAULT_OBSERVED),Nothing,Nothing} has a different number of parameters from type ODEFunction in workspace; reconstructing
└ @ JLD2 C:\Users\davorh.julia\packages\JLD2\r5t7Q\src\data\reconstructing_datatypes.jl:457

┌ Warning: read type ODESolution{Float64, 3, Vector{Matrix{Float64}}, Nothing, Nothing, Vector{Float64}, Vector{Vector{Matrix{Float64}}}, ODEProblem{Matrix{Float64}, Tuple{Float64, Float64}, false, SciMLBase.NullParameters, JLD2.ReconstructedTypes.var"##ODEFunction{false,SciMLBase.AutoSpecialize,Main.#BK,LinearAlgebra.UniformScaling{Bool},Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,typeof(SciMLBase.DEFAULT_OBSERVED),Nothing,Nothing}#291", Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}}, SciMLBase.StandardODEProblem}, AB3, OrdinaryDiffEq.InterpolationData{JLD2.ReconstructedTypes.var"##ODEFunction{false,SciMLBase.AutoSpecialize,Main.#BK,LinearAlgebra.UniformScaling{Bool},Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,typeof(SciMLBase.DEFAULT_OBSERVED),Nothing,Nothing}#291", Vector{Matrix{Float64}}, Vector{Float64}, Vector{Vector{Matrix{Float64}}}, OrdinaryDiffEq.AB3ConstantCache{Matrix{Float64}}}, DiffEqBase.DEStats} is not a leaf type in workspace; reconstructing
└ @ JLD2 C:\Users\davorh.julia\packages\JLD2\r5t7Q\src\data\reconstructing_datatypes.jl:263

MethodError: Cannot convert an object of type
JLD2.ReconstructedTypes.var"##ODESolution{Float64, 3, Vector{Matrix{Float64}}, Nothing, Nothing, Vector{Float64}, Vector{Vector{Matrix{Float64}}}, ODEProblem{Matrix{Float64}, Tuple{Float64, Float64}, false, SciMLBase.NullParameters, JLD2.ReconstructedTypes.var"##ODEFunction{false,SciMLBase.AutoSpecialize,Main.#BK,LinearAlgebra.UniformScaling{Bool},Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,typeof(SciMLBase.DEFAULT_OBSERVED),Nothing,Nothing}#291", Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}}, SciMLBase.StandardODEProblem}, AB3, OrdinaryDiffEq.InterpolationData{JLD2.ReconstructedTypes.var"##ODEFunction{false,SciMLBase.AutoSpecialize,Main.#BK,LinearAlgebra.UniformScaling{Bool},Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,typeof(SciMLBase.DEFAULT_OBSERVED),Nothing,Nothing}#291", Vector{Matrix{Float64}}, Vector{Float64}, Vector{Vector{Matrix{Float64}}}, OrdinaryDiffEq.AB3ConstantCache{Matrix{Float64}}}, DiffEqBase.DEStats}#292" to an object of type
ODESolution{Float64, 3, Vector{Matrix{Float64}}, Nothing, Nothing, Vector{Float64}, Vector{Vector{Matrix{Float64}}}, ODEProblem{Matrix{Float64}, Tuple{Float64, Float64}, false, SciMLBase.NullParameters, JLD2.ReconstructedTypes.var"##ODEFunction{false,SciMLBase.AutoSpecialize,Main.#BK,LinearAlgebra.UniformScaling{Bool},Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,typeof(SciMLBase.DEFAULT_OBSERVED),Nothing,Nothing}#291", Base.Pairs{Symbol, Union{}, Tuple{}, NamedTuple{(), Tuple{}}}, SciMLBase.StandardODEProblem}, AB3, OrdinaryDiffEq.InterpolationData{JLD2.ReconstructedTypes.var"##ODEFunction{false,SciMLBase.AutoSpecialize,Main.#BK,LinearAlgebra.UniformScaling{Bool},Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,Nothing,typeof(SciMLBase.DEFAULT_OBSERVED),Nothing,Nothing}#291", Vector{Matrix{Float64}}, Vector{Float64}, Vector{Vector{Matrix{Float64}}}, OrdinaryDiffEq.AB3ConstantCache{Matrix{Float64}}}, DiffEqBase.DEStats}

[ChrisRackauckas]

SciMLBase v1.70.0 would have been the last one before alg_choice was added to the struct.

https://github.com/SciML/SciMLBase.jl/releases/tag/v1.70.0

I would recommend keeping a manifest around if saving a jld2. Though as another note, there aren't any planned changes to the solution struct.