Windows7, Octave 5.1.0, unable to install package "Signal"

[UgoP]

Hello everyone,

I'm currently unable to install the package "signal" over Octave 5.1.0
running on Windows7 PRO.
I was on the contrary able to install :

>> pkg list
Package Name        | Version | Installation directory
--------------------+---------+-----------------------
           control  |   3.2.0 |
...\Octave-5.1.0.0\mingw64\share\octave\packages\control-3.2.0
instrument-control  |   0.4.0 |
...\mingw64\share\octave\packages\instrument-control-0.4.0

After having downloaded the signal package, the installation ends with the
following error message :

>> pkg install -forge signal
mv: cannot move
'C:/Octave/Octave-5.1.0.0/mingw64/share/octave/packages/signal-1.4.1/x86_64-w64-m
ingw32-api-v53/cl2bp.oct' to
'C:/Octave/Octave-5.1.0.0/mingw64/lib/octave/packages/signal-1.4.1/x
86_64-w64-mingw32-api-v53/cl2bp.oct': Device or resource busy
mv: cannot move
'C:/Octave/Octave-5.1.0.0/mingw64/share/octave/packages/signal-1.4.1/x86_64-w64-m
ingw32-api-v53/medfilt1.oct' to
'C:/Octave/Octave-5.1.0.0/mingw64/lib/octave/packages/signal-1.4.
1/x86_64-w64-mingw32-api-v53/medfilt1.oct': Device or resource busy
couldn't copy files to the installation directory
error: called from
    install>copy_files at line 545 column 9
    install at line 219 column 7
    pkg at line 441 column 9

I have also tried to run Octave as administrator, but it doesn't help.

Any suggestion will be appreciated.
Thank-you, best regards

Ugo



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