eclipseでconnectIQのアプリを開発したい

前提・実現したいこと

connectIQのアプリ開発をしようと考えています。
言語はMonkeyCです。
この言語についての情報が少なく、手探りで始めたところプログラムが上手く実行できませんでした。
プログラムはeclipseで書いており、プログラムの中身は簡単なTimerで、環境構築などはこちら（http://yaonobibouroku.blogspot.com/p/blog-page_84.html）を参考に行いました。

プログラムを実行は（https://www.programmableweb.com/news/how-to-develop-wearable-apps-connect-iq/sponsored-content/2016/10/11）を参考に行いましたが、シミュレーターに何も表示されませんでした。

発生している問題・エラーメッセージ

シミュレーターに何も表示されない。
実行時に、コンソール部に
BUILD: C:\Users\wasyo\garmin\pleiades-2019-09-java-win-64bit-jre_20191007 (1)\pleiades\java\11\bin\java -Dfile.encoding=UTF-8 -Dapple.awt.UIElement=true -jar C:\Users\wasyo\garmin\samples\connectiq-sdk-win-3.1.4-2019-09-17-f1e7e9687\bin\monkeybrains.jar -o "C:\Users\wasyo\garmin\pleiades-2019-09-java-win-64bit-jre_20191007 (1)\pleiades\workspace\Timer\bin\Timer.prg" -w -y C:\Users\wasyo\garmin\samples\connectiq-sdk-win-3.1.4-2019-09-17-f1e7e9687\samples\Timer\source\TimerView.mc -d fr235_sim -s 1.3.0 -f "C:\Users\wasyo\garmin\pleiades-2019-09-java-win-64bit-jre_20191007 (1)\pleiades\workspace\Timer\monkey.jungle"
BUILD: エラー: java.security.InvalidKeyException: invalid key format
BUILD: java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: invalid key format
BUILD: at java.base/sun.security.rsa.RSAKeyFactory.engineGeneratePrivate(RSAKeyFactory.java:251)
BUILD: at java.base/java.security.KeyFactory.generatePrivate(KeyFactory.java:390)
BUILD: at com.garmin.connectiq.common.signing.KeyUtils.getPrivateKey(KeyUtils.java:127)
BUILD: at com.garmin.connectiq.common.signing.KeyUtils.getPrivateKey(KeyUtils.java:106)
BUILD: at com.garmin.connectiq.common.signing.KeyUtils.getPrivateKey(KeyUtils.java:91)
BUILD: at com.garmin.connectiq.common.signing.KeyUtils.getPrivateKey(KeyUtils.java:55)
BUILD: at com.garmin.monkeybrains.Monkeybrains.run(Monkeybrains.java:2240)
BUILD: at com.garmin.monkeybrains.Monkeybrains.simpleMain(Monkeybrains.java:254)
BUILD: at com.garmin.monkeybrains.Monkeybrains.simpleMain(Monkeybrains.java:236)
BUILD: at com.garmin.monkeybrains.Monkeybrains.main(Monkeybrains.java:283)
BUILD: 原因: java.security.InvalidKeyException: invalid key format
BUILD: at java.base/sun.security.pkcs.PKCS8Key.decode(PKCS8Key.java:330)
BUILD: at java.base/sun.security.pkcs.PKCS8Key.decode(PKCS8Key.java:355)
BUILD: at java.base/sun.security.rsa.RSAPrivateCrtKeyImpl.<init>(RSAPrivateCrtKeyImpl.java:130)
BUILD: at java.base/sun.security.rsa.RSAPrivateCrtKeyImpl.newKey(RSAPrivateCrtKeyImpl.java:80)
BUILD: at java.base/sun.security.rsa.RSAKeyFactory.generatePrivate(RSAKeyFactory.java:356)
BUILD: at java.base/sun.security.rsa.RSAKeyFactory.engineGeneratePrivate(RSAKeyFactory.java:247)
BUILD: ... 9 more
BUILD: 使用法: monkeyc [-a <arg>] [-d <arg>] [-e] [--Eno-invalid-symbol] [-f <arg>] [-g]
BUILD: [-h] [-i <arg>] [-m <arg>] [-o <arg>] [-p <arg>] [-r] [-s <arg>] [-t] [-u
BUILD: <arg>] [-v] [-w] [-x <arg>] [-y <arg>] [-z <arg>]
BUILD: -a,--apidb <arg> API import file
BUILD: -d,--device <arg> Target device
BUILD: -e,--package-app Create an application package.
BUILD: --Eno-invalid-symbolDo not error when a symbol is found to be invalid
BUILD: -f,--jungles <arg> Jungle files
BUILD: -g,--debug Print debug output
BUILD: -h,--help Prints help information
BUILD: -i,--import-dbg <arg> Import api.debug.xml
BUILD: -m,--manifest <arg> Manifest file
BUILD: -o,--output <arg> Output file to create
BUILD: -p,--project-info <arg>projectInfo.xml file to use when compiling
BUILD: -r,--release Strip debug information
BUILD: -s,--sdk-version <arg> SDK version to target
BUILD: -t,--unit-test Enables compilation of unit tests
BUILD: -u,--devices <arg> devices.xml file to use when compiling
BUILD: -v,--version Prints the compiler version
BUILD: -w,--warn Show compiler warnings
BUILD: -x,--excludes <arg> Add annotations to the exclude list
BUILD: -y,--private-key <arg> Private key to sign builds with
BUILD: -z,--rez <arg> Resource file
BUILD: 完了
Aborting launch due to failed build.
と出てくる。

該当のソースコード

MonkeyC
1TimerApp.mc
2//
3// Copyright 2016 by Garmin Ltd. or its subsidiaries.
4// Subject to Garmin SDK License Agreement and Wearables
5// Application Developer Agreement.
6//
7
8using Toybox.Application;
9
10class TimerApp extends Application.AppBase {
11
12    function initialize() {
13        Application.AppBase.initialize();
14    }
15
16    // onStart() is called on application start up
17    function onStart(state) {
18    }
19
20    // onStop() is called when your application is exiting
21    function onStop(state) {
22    }
23
24    // Return the initial view of your application here
25    function getInitialView() {
26        return [ new TimerView(), new InputDelegate() ];
27    }
28
29}
30
31TimerDelegate.mc
32//
33// Copyright 2016 by Garmin Ltd. or its subsidiaries.
34// Subject to Garmin SDK License Agreement and Wearables
35// Application Developer Agreement.
36//
37
38using Toybox.WatchUi;
39
40class InputDelegate extends WatchUi.BehaviorDelegate {
41
42    function initialize() {
43        WatchUi.BehaviorDelegate.initialize();
44    }
45
46    function onMenu() {
47        timer1.stop();
48        return true;
49    }
50}
51
52TimerView.mc
53//
54// Copyright 2016 by Garmin Ltd. or its subsidiaries.
55// Subject to Garmin SDK License Agreement and Wearables
56// Application Developer Agreement.
57//
58
59using Toybox.WatchUi;
60using Toybox.Graphics;
61using Toybox.Timer;
62
63var timer1;
64var timer2;
65var timer3;
66var count1 = 0;
67var count2 = 0;
68var count3 = 0;
69
70class TimerView extends WatchUi.View {
71
72    function initialize() {
73        WatchUi.View.initialize();
74    }
75
76    function callback1() {
77        count1 += 1;
78        WatchUi.requestUpdate();
79    }
80
81    function callback2() {
82        count2 += 1;
83        WatchUi.requestUpdate();
84    }
85
86    function callback3() {
87        count3 += 1;
88        WatchUi.requestUpdate();
89    }
90
91    function onLayout(dc) {
92        timer1 = new Timer.Timer();
93        timer2 = new Timer.Timer();
94        timer3 = new Timer.Timer();
95
96        timer1.start(method(:callback1), 500, true);
97        timer2.start(method(:callback2), 1000, true);
98        timer3.start(method(:callback3), 2000, true);
99    }
100
101    function onUpdate(dc) {
102        var string;
103
104        dc.setColor(Graphics.COLOR_BLACK, Graphics.COLOR_BLACK);
105        dc.clear();
106        dc.setColor(Graphics.COLOR_WHITE, Graphics.COLOR_TRANSPARENT);
107        string = "Count: " + count1;
108        dc.drawText(40, (dc.getHeight() / 2) - 30, Graphics.FONT_MEDIUM, string, Graphics.TEXT_JUSTIFY_LEFT);
109        string = "Count: " + count2;
110        dc.drawText(40, (dc.getHeight() / 2), Graphics.FONT_MEDIUM, string, Graphics.TEXT_JUSTIFY_LEFT);
111        string = "Count: " + count3;
112        dc.drawText(40, (dc.getHeight() / 2) + 30, Graphics.FONT_MEDIUM, string, Graphics.TEXT_JUSTIFY_LEFT);
113    }
114
115}
116