added Class Quadrupole to additional elements for appropriate RM derivative...

added Class Quadrupole to additional elements for appropriate RM derivative computation in CalcRespXXRespMat_thick_V2

qem/FitLocalErrors/FitLocalErrors.m

@@ -33,6 +33,7 @@ r = qemb(2).at;
 Lthin = 1e-6;
 
 rerr = atsetfieldvalues(rerr,errpos,'PassMethod', 'StrMPoleSymplectic4Pass');%'ThinMPolePass';
+rerr = atsetfieldvalues(rerr,errpos,'Class', 'Quadrupole');% NECESSARY for FIT function
 rerr = atsetfieldvalues(rerr,errpos,'PolynomB',{1,1}, 0);
 rerr = atsetfieldvalues(rerr,errpos,'PolynomA',{1,1},0);
 rerr = atsetfieldvalues(rerr,errpos,'PolynomB',{1,2}, 0);