Newbie: keep getting errors on first simple watchface

-y is for your developer key  It looks like you don't have it set correctly.  Here's where you do that

This one has been solved... but now I get another error:

ERROR: C:\Users\Gebruiker\Dropbox\Programmeren\Monkey C (Access denied)

ERROR: C:\Users\Gebruiker\Dropbox\Programmeren\Monkey C (Access denied)
java.io.FileNotFoundException: C:\Users\Gebruiker\Dropbox\Programmeren\Monkey C (Access denied)
at java.base/java.io.FileInputStream.open0(Native Method)
at java.base/java.io.FileInputStream.open(FileInputStream.java:219)
at java.base/java.io.FileInputStream.<init>(FileInputStream.java:158)
at com.garmin.connectiq.common.signing.KeyUtils.getPrivateKey(KeyUtils.java:105)
at com.garmin.connectiq.common.signing.KeyUtils.getPrivateKey(KeyUtils.java:91)
at com.garmin.connectiq.common.signing.KeyUtils.getPrivateKey(KeyUtils.java:55)
at com.garmin.monkeybrains.Monkeybrains.run(Monkeybrains.java:2671)
at com.garmin.monkeybrains.Monkeybrains.simpleMain(Monkeybrains.java:342)
at com.garmin.monkeybrains.Monkeybrains.main(Monkeybrains.java:371)
usage: monkeyc [-a <arg>] [-b <arg>] [-c <arg>] [-d <arg>] [-e]
[--Eno-invalid-symbol] [-f <arg>] [-g] [-h] [-i <arg>] [-k] [-l <arg>]
[-m <arg>] [-o <arg>] [-p <arg>] [-r] [-s <arg>] [-t] [-u <arg>] [-v]
[-w] [-x <arg>] [-y <arg>] [-z <arg>]
-a,--apidb <arg> API import file
-b,--apimir <arg> API MIR file
-c,--api-level <arg> API Level to target
-d,--device <arg> Target device
-e,--package-app Create an application package.
--Eno-invalid-symbolDo not error when a symbol is found to be invalid
-f,--jungles <arg> Jungle files
-g,--debug Print debug output
-h,--help Prints help information
-i,--import-dbg <arg> Import api.debug.xml
-k,--profile Enable profiling support
-l,--typecheck <arg> Type check [0=off, 1=gradual, 2=informative, 3=strict]
-m,--manifest <arg> Manifest file (deprecated)
-o,--output <arg> Output file to create
-p,--project-info <arg>projectInfo.xml file to use when compiling
-r,--release Strip debug information
-s,--sdk-version <arg> SDK version to target (deprecated, use -c
-t,--unit-test Enables compilation of unit tests
-u,--devices <arg> devices.xml file to use when compiling (deprecated)
-v,--version Prints the compiler version
-w,--warn Show compiler warnings
-x,--excludes <arg> Add annotations to the exclude list (deprecated)
-y,--private-key <arg> Private key to sign builds with
-z,--rez <arg> Resource files (deprecated)

* The terminal process "C:\Program Files\Java\jdk-19\bin\java.exe '-Xms1g', '-Dfile.encoding=UTF-8', '-Dapple.awt.UIElement=true', '-jar', 'c:\Users\Gebruiker\AppData\Roaming\Garmin\ConnectIQ\Sdks\connectiq-sdk-win-4.1.5-2022-08-03-6e17bf167\bin\monkeybrains.jar', '-o', 'bin\GarminFenix.prg', '-f', 'c:\Users\Gebruiker\xxxxxxxxxxxxxxxx\Documenten\Programmeren\Monkey C\GarminFenixTest\GarminFenix\monkey.jungle', '-y', 'C:\Users\Gebruiker\Dropbox\Programmeren\Monkey C', '-d', 'fenix7_sim', '-w'" terminated with exit code: 100.

Looks like the compiler can't open your key file:

ERROR: C:\Users\Gebruiker\Dropbox\Programmeren\Monkey C (Access denied)
java.io.FileNotFoundException: C:\Users\Gebruiker\Dropbox\Programmeren\Monkey C (Access denied)

...

'-y', 'C:\Users\Gebruiker\Dropbox\Programmeren\Monkey C'

It seems that you've set your developer key path to:

"C:\Users\Gebruiker\Dropbox\Programmeren\Monkey C"

Is this a folder or a file? It needs to be the full path (including filename) to the key file that you generated with:

CTRL-SHIFT-P > Monkey C: Generate a Developer Key

If the path is set correctly, try placing the key outside of your dropbox, in case dropbox is somehow preventing access to the key.

This was the trick... thank you so much.
I assumed that the path was without the filename, as it is with the Java path.

No all works! Thanks!