As per instructions, I’ve attempted the following multiple times on Mac OS X Yosemite 10.10.1:

I’ve installed the Mac version of the Tizen SDK for wearable, including the IDE and created example projects.
Following that, I generate a new CSR which I sent in to Samsung to receive my certificate, and a device profile,
in which I put the DUID of my Gear S, that I retrieved by looking at the properties of the device in the Connection
Explorer.

I set up the certificate and device-profile using the Request and Register a Certificate dialog in the IDE. This automatically
sets up my profiles.xml and generates the .p12 files. Following this I click Permit to install applications, which returns with
Succeeded to upload a certificate.

From what I’ve gathered from the documents, this should allow me to build my test project and run it on the device, however
whenever I attempt to run it I get:

Error code: SIGNATURE_INVALID
Error message: 
Command: /usr/bin/pkgcmd -i -q -t wgt -p "/opt/usr/apps/tmp/AltiTest.wgt"
Management: Check author certificates in Preferences > Tizen SDK > Secure Profiles > Profile items. Or try to perform 'permit to install applications' of the context menu in Connection Explorer.

What am I doing wrong? Which step do I seem to be forgetting?

profiles.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<profiles version="3.0">
<profile name="default">
<profileitem ca="" distributor="0" key="/Users/pascal/tizen-wearable-sdk-data/keystore/author.p12" password="*****" rootca=""/>
<profileitem ca="" distributor="1" key="/Users/pascal/tizen-wearable-sdk-data/keystore/distributor.p12" password="*****" rootca=""/>
</profile>
</profiles>