Level of Decomposition

[ric123]

Will anyone help pls
I have a model I built and so far so good
But I dont know what I have changed the opening - level of decomposition malfunctions. When I drop from 'Model' to 'Surface' it is ok. But from 'surface' to 'space' it doesnt happen Instead the drawing disappears and the indication is 'opening' instead of 'space'
I am slowed down greatly as I am presently defining glazing doors etc and it is best in the mode
Any help please

[ric123]

Just an addition
because I cant go to this level of decomposition means I cannot work on my walls and cant specify/edit the wall variables
Thanks for your help

[ric123]

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