While typing some Java code, I hit the dot/member operator (.) as in the dot inside ObjectName.methodName and got this error in a popup in Eclipse:
The `org.elcipse.jst.ws.jaxws.ui.jaxwsjavacompletioncomputer`
proposal computer from the `org.eclipse.jst.ws.jaxws.ui`
plug-in did not complete normally.
A second popup immediately followed with the message:
"Cannot perform operation: The compilation unit
is not in the build path of a Java project".
Does this mean some required library is not installed as it needs to be?
From some of the occurrences out there, it looks like your current project has no "Java nature" attached to it.
Check the project properties. See if its .project file has a javanature in it.