Error on deleting floors

[Anonymous]

I am getting an error when deleting floors. The ArchiCAD crashes! I`ve already tried to clean the objects at the floor before, and also delete other one, without success. Do I need to start another file and copy all the stuff? Or there`s another solution? Thanks!

[Laszlo Nagy]

Crashing just because of deletion of an element is not normal behaviour as you would guess. There maybe something wrong with the file.
If this keeps occurring it may be your best bet to start a brand new project based on the default ARCHICAD template and copy-paste elements into it.