Extruding the end of a revolved body: Error: inconsistent edge-face relationship

[Anonymous]

My apologies if this is really a stupid question but I am newish to Fusion and have run into this problem which I can not find the answer to!

I have a simple sketch that I revolve through 90 degrees. Then I want to extrude the end by 5mm to extend the body so selected Join but I keep getting an error Error: inconsistent edge-face relationships. I can create a new body but then I cant combine them.

Can anyone able to explain what I've done wrong?

I am on Fusion 360 2.0.5357 on a Mac running High Sierra 

Many thanks in advance.

[msecco]

Can you send model to analyse, please?

[chrisplyler]

Weird. I had no problem at all.

Can you export your file to your computer as an f3d file and attach it in your next post so that we can examine it?

[Anonymous]

Thanks for trying - in the end I had to just start again. I redrew and it just worked. I read somewhere that tiny, tiny errors in the drawing could cause this, so I imagine I messed up spmewhere in it.