When Ignision SE is not installed or is not running, you will receive the following error when you try to connect with the Ion Desktop Client:
"Ion Desktop Client error: No bridge to server"
"Internal diagnostics: Failed to send magic (186)." is often appended to this error.
This error means that the Ion Desktop Client is able to successfully connect to the remote machine (it is online and responding), but either the Ignision SE server software is not running or something is filtering traffic, e.g. the Mac firewall. Verify that Ignision is running by running the following command in a terminal:
sudo ps aux | grep -i ionserver | grep -v grep
You should see output similar to this:
builder 3779 0.1 0.3 2620024 24876 ?? S 4:00PM 0:02.12 /Applications/Ignision SE.app/Contents/Resources/IonServer.app/Contents/MacOS/IonServer -seMode
root 3781 0.0 0.2 2568664 18312 ?? Ss 4:00PM 0:00.77 /Applications/Ignision SE.app/Contents/Resources/IonServer.app/Contents/MacOS/IonServer -ignision -seMode -configuration /Library/Preferences/net.aquaconnect.ionserver.json
See the article titled “Ion Desktop Client error: Unable to resolve host(s)” for Mac firewall configuration instructions.