I had a problem where for a certain user the AX Client would crash on startup, because of the nature of the problem it was difficult to get in to debug to see what the cause was.

After a bit of digging around it turns out that info.workspaceWindowCreated() was the source of the problem, some dodgy custom code had been added there and removing it resolved the issue.

It's common for people to customise workspaceWindowCreated() to add some information into the client title bar on startup, for example the environment name, aos instance, layer etc..

So if the client crashes on startup try looking at the info class, hopefully it will help!