| First calculation slow (~30s) | Normal — model downloads on first use, cached afterward |
mace-torch install fails | Install PyTorch first: pip install torch. Requires Python 3.10+ |
| CUDA out of memory | Switch to CPU in the parameter panel, or use a smaller model |
torch.load / weights_only error | PyTorch 2.6+ issue — already patched in calculate_local.py. Run pip install --upgrade mace-torch |
| MACE-OFF element error | MACE-OFF only supports 10 organic elements (H,C,N,O,F,P,S,Cl,Br,I). Use MACE-MP-0 for metals/inorganics |
| Shared link shows "not found" | The result ID may be invalid. Shared results are permanent once created |
| Validation suite fails | Run pip install mace-torch ase to ensure dependencies are installed |
MACE_API_URL not working | Ensure it starts with http:// or https://. Check the remote server is running |