I'm having a similiar problem as the thread starter, however my problem comes from the bifacial system definition not reacting to the settings in my 3d scene. I'm in investigating how bifacial solar park can be optimized via varying pitch. To do so I have created 20 different shading scenes for bifacial modules where the only difference is the pitch, ranging from 11 m to 6 m in steps of 0.3 (giving us 20 shading scenes). But as soon as I import the shading scene for pitch 10.4 and 10.1 I get the same error as mentioned above, followed by the following text: "Your PV system is not suited for the bifacial 2d model computation: the pitch between tables is not sufficiently homogenous. You should define regular sheds in the 3d scene" The other pitches seem to be fine, for now I'm only getting this error for pitch 10.4 and 10.1. So i double-checked the shading scenes and the pitch is the same everywhere. But when i checked the bifacial system definition the pitch is not changed accordingly for pitch 10.1 and 10.4, but does so for the other pitches which is strange to me. And when I try to change the pitch manually it goes back to its old value after saving. Has anyone else encountered the same problem, and how can this easily be solved if possible?