Export fail if non-PlasmaObject selected but hidden

[TheScarFr]

If I try to export while an non-PlasmaObject is selected but hidden, the export fails:

[Hoikas]

I'm not able to reproduce this. My process is:

• Select an object
• Untick "Plasma Object"
• Hide the object by pressing H
• Click on the world panel
• Click on "Export Age"

[TheScarFr]

To export, I always use "File > Export > Plasma Age (.age)".