Re: NETWORK FAILURE ERROR You have entered a separate floor for the mezzanine beams, it would be more accurate if you enter them by leveling the beams on the ground floor instead of entering them on a separate floor. In this state, vertical continuity between the ground floor and the basement is not provided in some curtains. If you examine the analysis model in 3 dimensions, you have given the mesh lengths of 150 cm, this is a bit too much, maximum 50 cm (preferably 20-25 cm) for both curtains and floors. The line on the right side of your building (p027 and P028 curtains) is very small. there is a millimeter shift, did you enter it that way specifically? I think you need to fix it too, for the right analysis system to be formed. Unable to create mesh error may be due to the offset of these curtains.