open the blend and look on the bottom left corner of the screen. under the outliner you will see a group outliner where you can see a group called, “camera_equipment”. In that group you can also see an empty, called “view target” that does not seem to exist anywhere on any layer. I want to get rid of this camera_equipment group, but it just wont let me.
Also, can anybody see a reason that this file is 2.6MB? I dont think there is anything in there to make it that large.
Not sure what the problem is with the group issue. I fiddled around with your file but couldn’t figure it out.
As to your second question regarding size, I am not sure why it is so big. However, I do know that the very first time you save a file, in the file browser window where you name your file, you can tick the button labelled “Compress” on the left of the window. That should fix that.