id summary reporter owner description type status priority milestone component version resolution keywords cc 4115 Clarify error message in the absence of voltage reference (ground) Pierre Haessig Volker Waurich "When trying to simulate a simple electrical circuit (for example: constant voltage source + resistance) while foregetting to put a voltage reference (ground), the error message is not helpful. It complains about circular inequalities and singular linear systems (see attached Model and log). These messages actually miss the point which that ''one equation is missing'' to define electrical potentials. Is is possible to clarify the error message? In an ideal world, the error message would even suggest the user to add a Ground, but this is maybe too complex (I've no idea of the difficulty of detecting this kind of beginner's mistake)." enhancement assigned normal Future Backend v1.11.0