user31105: I installed UECIDE from Majenko but I couldn't register nor email him so I try it here.
When trying in install the MIDI library from 47 effects (https://github.com/FortySevenEffects/arduino_midi_library/releases/tag/4.3.1) I get the following error:
Compiling Failed
Analyzing Arduino_MIDI_Library_v4.3.1.zip ...
Unable to detect any valid libraries in the archive.
You may need to manually install it or re-package it properly.

How to solve this?
I tried install manually by copying files but that didn't result in anything.

user4143: The auto-install method only (currently) works with old single-arch style libraries. This one is a new multi-arch style library (though it doesn't use the multi-arch facilities).
You need to install it manually.  Simply that means extracting the zip file into "libraries" within your "UECIDE" folder in your documents (My Documents/UECIDE/libraries on Windows, or ~/Documents/UECIDE/libraries on Linux / OS X).
If UECIDE is open at the time you can use "Help -> Debug -> Rebuild internal structures" to re-scan the available libraries, or just close it and re-open it.

31105: <p>I installed UECIDE from Majenko but I couldn't register nor email him so I try it here.</p>

<p>When trying in install the MIDI library from 47 effects (<a href="https://github.com/FortySevenEffects/arduino_midi_library/releases/tag/4.3.1" rel="nofollow noreferrer">https://github.com/FortySevenEffects/arduino_midi_library/releases/tag/4.3.1</a>) I get the following error:</p>

<pre><code>Compiling Failed
Analyzing Arduino_MIDI_Library_v4.3.1.zip ...
Unable to detect any valid libraries in the archive.
You may need to manually install it or re-package it properly.
</code></pre>

<p>How to solve this?</p>

<p>I tried install manually by copying files but that didn't result in anything.</p>
 4143: <p>The auto-install method only (currently) works with old single-arch style libraries. This one is a new multi-arch style library (though it doesn't use the multi-arch facilities).</p>

<p>You need to install it manually.  Simply that means extracting the zip file into "libraries" within your "UECIDE" folder in your documents (My Documents/UECIDE/libraries on Windows, or ~/Documents/UECIDE/libraries on Linux / OS X).</p>

<p>If UECIDE is open at the time you can use "Help -> Debug -> Rebuild internal structures" to re-scan the available libraries, or just close it and re-open it.</p>
