Import TreeQSM models fail

[Karltlbm]

Hello

Trying to import QSMs from TreeQSM into aRchi
Using the examples :

file=system.file("extdata",".../OptQSM.mat", package = "aRchi")
read_QSM(file, model='treeQSM')

I get:

> read_QSM(file, model='treeQSM')
Erreur dans data.table::fread(file) : 
  Input is empty or only contains BOM or terminal control characters

But using only

read_QSM(".../OptQSM.mat", model='treeQSM')
The result is

> read_QSM("D:/Karl/newHydro/to_compare/matlab/OptQSM_2023.mat", model='treeQSM')
Erreur dans data.table::setnames(data, c("radius", "length", "startX", "startY",  : 
  Can't assign 15 names to a 0-column data.table

My OptQSM .mat file contains 5 lines, one optimal model for each of 5 trees.
So I thought that i could use only one of the lines.
I have now a new OptQSM_SingleTree.mat file which contains only [cylinder, branch, treedata...] for one tree.

And now the result is :

> read_QSM(".../OptQSM_SingleTree.mat", model='treeQSM')
Erreur dans data$startX : objet de type 'closure' non indiçable
De plus : Message d'avis :
Dans read_QSM(".../OptQSM_SingleTree.mat", model = "treeQSM") :
  No QSM found

Any idea ?