Index: /issm/trunk-jpl/src/m/classes/m1qn3inversion.py
===================================================================
--- /issm/trunk-jpl/src/m/classes/m1qn3inversion.py	(revision 17912)
+++ /issm/trunk-jpl/src/m/classes/m1qn3inversion.py	(revision 17913)
@@ -60,5 +60,5 @@
 		string="%s\n%s"%(string,fielddisplay(self,'iscontrol','is inversion activated?'))
 		string="%s\n%s"%(string,fielddisplay(self,'incomplete_adjoint','1: linear viscosity, 0: non-linear viscosity'))
-		string="%s\n%s"%(string,fielddisplay(self,'control_parameters','ex: {''FrictionCoefficient''}, or {''MaterialsRheologyBbar''}'))
+		string="%s\n%s"%(string,fielddisplay(self,'control_parameters','ex: [''FrictionCoefficient''], or [''MaterialsRheologyBbar'']'))
 		string="%s\n%s"%(string,fielddisplay(self,'nsteps','number of optimization searches'))
 		string="%s\n%s"%(string,fielddisplay(self,'dxmin','convergence criterion: two points less than dxmin from eachother (sup-norm) are considered identical'))
@@ -118,6 +118,6 @@
 		md = checkfield(md,'fieldname','inversion.control_parameters','cell',1,'values',['BalancethicknessThickeningRate','FrictionCoefficient','MaterialsRheologyBbar','DamageDbar','Vx','Vy','Thickness'])
 		md = checkfield(md,'fieldname','inversion.nsteps','numel',[1],'>=',0)
-		md = checkfield(md,'fieldname','inversion.dxmin','numel',1,'>',0.)
-		md = checkfield(md,'fieldname','inversion.epsrel','numel',1,'>',0.)
+		md = checkfield(md,'fieldname','inversion.dxmin','numel',[1],'>',0.)
+		md = checkfield(md,'fieldname','inversion.epsrel','numel',[1],'>',0.)
 		md = checkfield(md,'fieldname','inversion.cost_functions','size',[num_costfunc],'values',[101,102,103,104,105,201,501,502,503,504,505])
 		md = checkfield(md,'fieldname','inversion.cost_functions_coefficients','size',[md.mesh.numberofvertices,num_costfunc],'>=',0)
@@ -143,6 +143,6 @@
 		WriteData(fid,'object',self,'class','inversion','fieldname','incomplete_adjoint','format','Boolean')
 		WriteData(fid,'object',self,'class','inversion','fieldname','nsteps','format','Integer')
-		WriteData(fid,'object',obj,'class','inversion','fieldname','dxmin','format','Double')
-		WriteData(fid,'object',obj,'class','inversion','fieldname','epsrel','format','Double')
+		WriteData(fid,'object',self,'class','inversion','fieldname','dxmin','format','Double')
+		WriteData(fid,'object',self,'class','inversion','fieldname','epsrel','format','Double')
 		WriteData(fid,'object',self,'class','inversion','fieldname','cost_functions_coefficients','format','DoubleMat','mattype',1)
 		WriteData(fid,'object',self,'class','inversion','fieldname','min_parameters','format','DoubleMat','mattype',3)