Loading Applixcation.Properties in function getInitialView fails sometimes

What type of exceptions are you getting?

ERA only says: "Unhandled Exception", maybe I could catch the Exception and then log it somehow but I don't know if I will see it in ERA when I do that.

That's a tricky one 

Assuming it is coming from getValue(), the documentation only mentions the following exceptions:

Raises:

• Toybox::Lang::UnexpectedTypeException —

  Thrown if setValue() is called key of type null, Array, or Dictionary

• Toybox::Application::Properties::InvalidKeyException —

  Thrown if getValue() is called with a key that does not exist in Application Settings

So presumably it must be the 2nd of those two - a key that does not exist in Application Settings - but I'm guessing you do actually have those keys defined in your settings ...

Although seeing that now, it reminds me of a bug I posted a few months ago, where I was calling Properties.setValue and getting the invalid key exception even though the key existed - it was only happening on F5X and D2C watches and nothing else with the same code. (Note I don't have any code which runs on an Edge device though.) See the bug here:

https://forums.garmin.com/developer/connect-iq/i/bug-reports/crash-exception-when-calling-application-properties-setvalue-for-a-key-which-exists-but-error-says-it-doesn-t

So yours actually sounds like it could be similar ...

ejdevries said:

ERA only says: "Unhandled Exception", maybe I could catch the Exception and then log it somehow but I don't know if I will see it in ERA when I do that.

If you catch the exception and generate another error in or throw another exception from the catch block, the stack trace would tell you which block was active when the failure occurred. i.e.,

using Toybox.Application.Properties;
using Toybox.Lang;


    function getPropertyValue(key) {
        try {
            return Properties.getValue(key, value);
        }
        catch(ex) {
    
            if (ex instanceof Lang.UnexpectedTypeException) {
                ex.toNumber(); // should generate a symbol not found error
            }
            else if (ex instanceof Properties.InvalidKeyException) {
                ex.toFloat(); // should also generate a symbol not found error
            }
            else {
                throw ex;
            }
        }
    }

That should tell you which exception is. My guess is that it is an InvalidKeyException though. I'm assuming this is related to the issue described by markdotai above.

Nice method