[BUG] Exception calling application: service does not exist ChatApp Server

[James-Sloop]

Describe the bug
I am doing the first CORE Tutorial and I can complete the first 4 tasks; Using Ping, Using Tcpdump, Editing a Link, and Running Software. The fifth task, Tailing a Log, is causing problems when I try to open the scenario. I am about to start the Core-daemon and open the core-gui but when I hit File->Open then navigate to and select scenario_service.xml, I get a popup with an error saying "Exception calling application: service does not exist ChatApp Server".

To Reproduce
Steps to reproduce the behavior:
In the GUI menu bar select File->Open..., then navigate to and select scenario_service.xml

Expected behavior
A core session should open with 2 nodes, n1 and n2 connected by a red line.

Screenshots

Desktop:

• OS: Ubuntu 22.04
• CORE Version: 9.0.3
• EMANE Version: 1.5.1

[bharnden]

Did you install the chat app service? From the setup section. That error would indicate you didn't or that something is off in how that was done.

https://coreemu.github.io/core/tutorials/setup.html#installing-the-chat-app-service

[James-Sloop]

I have, in the previous step of the tutorial I used chatapp to communicate between n1 and n2. The following step was completed without issue:

[bharnden]

That is different than setting up the ChatApp Server CORE service that is needed, so that is not the same thing.

[James-Sloop]

Thank you, there was a problem setting up the ChatApp Server my installation had 2 copies of core.conf both in directories ending with /etc/ but it looks like I changed the wrong one.