Command 'Monkey C: Edit Products' resulted in an error (Cannot read properties of undefined (reaching 'each'))

As per the discussion here, this might be happening because you're trying to build the Analog sample, which has a bunch of devices pre-configured, but you haven't downloaded all of those devices.

You could try:

- downloading all the devices

or

- editing manifest.xml by hand - comment out or delete the devices you don't want to build / download.

The Analog sample's manifest.xml looks like this:

<!-- This is a generated file. It is highly recommended that you DO NOT edit this file. --><iq:manifest xmlns:iq="http://www.garmin.com/xml/connectiq" version="1">
    <iq:application entry="AnalogWatch" id="98153CD986EFAB64CDA0954834618412" launcherIcon="@Drawables.LauncherIcon" minSdkVersion="1.2.0" name="@Strings.AppName" type="watchface">
        <iq:products>
            <iq:product id="approachs60"/>
            <iq:product id="d2bravo"/>
            <iq:product id="d2bravo_titanium"/>
            <iq:product id="d2charlie"/>
            <iq:product id="descentmk1"/>
            <iq:product id="epix"/>
            <iq:product id="fenix3"/>
            <iq:product id="fenix3_hr"/>
            <iq:product id="fenix5"/>
            <iq:product id="fenix5s"/>
            <iq:product id="fenix5x"/>
            <iq:product id="fenix6"/>
            <iq:product id="fenixchronos"/>
            <iq:product id="fr230"/>
            <iq:product id="fr235"/>
            <iq:product id="fr630"/>
            <iq:product id="fr735xt"/>
            <iq:product id="fr920xt"/>
            <iq:product id="fr935"/>
            <iq:product id="vivoactive"/>
            <iq:product id="vivoactive3"/>
            <iq:product id="vivoactive_hr"/>
        </iq:products>
        <iq:languages>
            <iq:language>eng</iq:language>
        </iq:languages>
    </iq:application>
</iq:manifest>