Ok.. another silly question.... I tried: `DensityPlot[x^4 - 2 x^2 + y^4 - 2 y^2 + 1, {x, -2, 2}, {y, -2, 2},
ColorFunction -> Setting@ColorBar[], PlotPoints -> 150,
PlotRange -> {-2, 2}]` and got this error `$RecursionLimit::reclim2: Recursion depth of 1024 exceeded during evaluation of System`SampledPlotsDump`dataextremes$89150.`