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About Archicad's design tools, element connections, modeling concepts, etc.


Just migrated a project for 15 to 16.
When ever I tried editing the roof (created in 15) archicad crashes.
Anyone else having this problem?
Sedley Jeffers
St.Vincent & the Grenadines
Archicad 26 Full USA - Cadimage & Twinmotion
MacBook Pro M1 16", 64GB RAM. OSX Monterey
No problem with roofs here editing a roof made with versions 15 (3898) in version 16 (3270).

ArchiCAD 25 7000 USA - Windows 10 Pro 64x - Dell 7720 64 GB 2400MHz ECC - Xeon E3 1535M v6 4.20GHz - (2) 1TB M.2 PCIe Class 50 SSD's - 17.3" UHD IPS (3840x2160) - Nvidia Quadro P5000 16GB GDDR5 - Maxwell Studio/Render Multilight 2 - Adobe Acrobat Pro - ArchiCAD 6 -25

Laszlo Nagy
Community Admin
Community Admin
Maybe that single Roof element got corrupted somehow.
You may try to select it, Cut in from the Project (CTRL+X), then paste it. Sometimes that fixes it or gives you the message that there is something wrong with it.
If it does not get fixed like this, you may have to delete it and remodel it.
Loving Archicad since 1995 - Find Archicad Tips at
AMD Ryzen9 5900X CPU, 64 GB RAM 3600 MHz, Nvidia GTX 1060 6GB, 500 GB NVMe SSD
2x28" (2560x1440), Windows 10 PRO ENG, Ac20-Ac27