@hansmex
In this case I don't know how to help you
I could suggest you an classical solution:
1. Backup your current SH3D installation.(rename actual sweethome3d folder to sweethome3dBak or whatever)
2. Install the official v.7.5 from this site.(free)
3. Install the corrected version of RoofGenerator-v.5.1.sh3p
Note: Be sure to download and install the last corrected version.
Considering this, I suggest also to delete ALL RG versions from Download folder and download again before installing to be sure you double click on the correct file.
Please let me know if that works OR what error appears in the terminal.
Good luck and I wait!
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A computer program does what you tell it to do, not what you want it to do. Murphy's Law
When all else fails, read the instructions. Murphy's Law
If you don't like "AS IS", DIY. Dorin's law
