# Issue with updating ModelingToolkit and remake command
**URL:** https://discourse.julialang.org/t/issue-with-updating-modelingtoolkit-and-remake-command/112164
**Category:** Modelling & Simulations
**Created:** [March 26, 2024, 11:41pm UTC](https://discourse.julialang.org/t/issue-with-updating-modelingtoolkit-and-remake-command/112164 "2024-03-26T23:41:20Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Nick1](https://discourse.julialang.org/u/Nick1)
#### Post date: [March 26, 2024, 11:41pm UTC](https://discourse.julialang.org/t/issue-with-updating-modelingtoolkit-and-remake-command/112164/1 "2024-03-26T23:41:20Z")
I am trying to run the following code but I get the following error when I run the `remake` command at the end:
> ERROR: MethodError: Cannot `convert` an object of type Pair{SymbolicUtils.BasicSymbolic{Real}, Float64} to an object of type Float64
I suspect the reason is the outdated version of ModelingToolkit.jl (current version v8.75.0). However, when I try to update I get the following:
> ┌ Warning: attempting to remove probably stale pidfile
> │ path = “C:\Users\name\.julia\compiled\v1.10\LanguageServer\ite7n\_OKxyi.ji.pidfile”
> └ @ FileWatching.Pidfile C:\Users\name.julia\juliaup\julia-1.10.2+0.x64.w64.mingw32\share\julia\stdlib\v1.10\FileWatching\src\pidfile.jl:244
> Precompiling project…
> Progress [\>] 0/1
> ◓ LanguageServer Waiting for background task / IO / timer. Interrupt to inspect
This issue also affects the update of other packages, such as Catalyst, DiffEqCallbacks, SteadyStateDiffEq, StructuralIdentifiability. How can I resolve this issue?
```julia
using DifferentialEquations
using SBMLToolkit
using ModelingToolkit
SBMLToolkit.checksupport_file("toy_model_sbml.xml")
mdl = readSBML("toy_model_sbml.xml", doc -> begin
set_level_and_version(3, 2)(doc)
convert_promotelocals_expandfuns(doc)
end);
rn = ReactionSystem(mdl);
odesys = convert(ODESystem, rn);
T=300.0;
tspan = (0.0, T);
prob = ODEProblem(odesys, Float64[], tspan, Float64[]);
defs = ModelingToolkit.defaults(odesys);
getval(v) = defs[v];
pmap = parameters(odesys) .=> getval.(parameters(odesys));
u0map = states(odesys) .=> getval.(states(odesys));
p = getval.(parameters(odesys));
p[1] = 10.0 ;
for (idx, param) in enumerate(p)
pmap[idx] = pmap[idx][1] => param
end
prob2 = remake(prob; p=pmap, u0=u0map);
```
---
### Author:  [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)
#### Post date: [March 27, 2024, 8:09am UTC](https://discourse.julialang.org/t/issue-with-updating-modelingtoolkit-and-remake-command/112164/2 "2024-03-27T08:09:31Z")
Open an issue on ModelingToolkit. We’re almost done with the v9 updates and I think there’s a few stragglers on the remake end that we’re fixing up this week.
---
### Author:  [@isaacsas](https://discourse.julialang.org/u/isaacsas)
#### Post date: [March 28, 2024, 2:41pm UTC](https://discourse.julialang.org/t/issue-with-updating-modelingtoolkit-and-remake-command/112164/3 "2024-03-28T14:41:05Z")
Though the current updates would only fix things if they are compatible with Catalyst v13 – otherwise this may require downgrading SciMLBase to an older version before SymbolicIndexingInterface (maybe 2.3?), or waiting for Catalyst v14.
---
### Author:  [@Nick1](https://discourse.julialang.org/u/Nick1)
#### Post date: [May 28, 2024, 6:50pm UTC](https://discourse.julialang.org/t/issue-with-updating-modelingtoolkit-and-remake-command/112164/4 "2024-05-28T18:50:25Z")
I would like to report that the problem regarding the ModelingToolkit persists