I have an error when I try to open my saved jmx (my backup is a week old),
I tried to follow similar issues but can\'t load it also with JMeter 3.1,
I install ne
Moving to the latest Jmeter version 5.1.1 did the trick for me.
Check that you are using latest Jmeter software.
Currently in latest version of Jmeter (3.2) if your jmx file using any kind of plugin and your Jmeter not install that plugin it will show your.
Check that the plugins are compatible with JMeter 3.2.
Try opening your plan with the version it was created in and check you are not using deprecated elements that get removed in N+1 version.
To know about deprecated Test Elements, look at: