diff --git a/docs/Module/Powerflow/Global/Solver_profile_csv.md b/docs/Module/Powerflow/Global/Solver_profile_csv.md
new file mode 100644
index 000000000..7808fe2a9
--- /dev/null
+++ b/docs/Module/Powerflow/Global/Solver_profile_csv.md
@@ -0,0 +1,23 @@
+[[/Module/Powerflow/Global/Solver_profile_csv]] -- Enable CSV formatting of solver profile data
+
+# Synopsis
+
+Shell:
+
+~~~
+bash$ gridlabd -D|--define solver_profile_csv={TRUE,FALSE}
+~~~
+
+GLM:
+
+~~~
+  #set solver_profile_csv={TRUE,FALSE}
+~~~
+
+# Description
+
+This global enables formatting of solver output as CSV.
+
+# See also
+
+* [[/Module/Powerflow]]
diff --git a/module/powerflow/init.cpp b/module/powerflow/init.cpp
index a4206ac20..106305ac6 100644
--- a/module/powerflow/init.cpp
+++ b/module/powerflow/init.cpp
@@ -74,6 +74,8 @@ EXPORT CLASS *init(CALLBACKS *fntable, MODULE *module, int argc, char *argv[])
 	gl_global_create("powerflow::solver_profile_headers_included", PT_bool, &solver_profile_headers_included,PT_DESCRIPTION, "Flag to include headers in NR solver profile file",NULL);
 	extern char1024 solver_headers;
 	gl_global_create("powerflow::solver_headers", PT_char1024, &solver_headers,PT_DESCRIPTION, "Headers in NR solver profile file",NULL);
+	extern bool solver_profile_csv;
+	gl_global_create("powerflow::solver_profile_csv", PT_bool, &solver_profile_csv,PT_DESCRIPTION, "Flag output solver profile in CSV format",NULL);
 
 	extern char1024 solver_py_config;
 	gl_global_create("powerflow::solver_py_config", PT_char1024, &solver_py_config, PT_DESCRIPTION, "PY solver configuration file location",NULL);
diff --git a/module/powerflow/solver_nr.cpp b/module/powerflow/solver_nr.cpp
index 17b7cd36d..003e8f18d 100644
--- a/module/powerflow/solver_nr.cpp
+++ b/module/powerflow/solver_nr.cpp
@@ -52,12 +52,13 @@ using namespace std;
 #include <stdio.h>
 #include <string.h>
 
-char1024 solver_profile_filename =  "solver_nr_profile.csv";
-char1024 solver_headers =  "timestamp,duration[microsec],iteration,bus_count,branch_count,error";
+char1024 solver_profile_filename =  "solver_nr_profile.txt";
 static FILE * nr_profile = NULL;
+char1024 solver_headers = "timestamp,duration[microsec],iteration,bus_count,branch_count,error";
 bool solver_profile_headers_included = true;
 bool solver_profile_enable = false;
 bool solver_dump_enable = false;
+bool solver_profile_csv = false;
 
 //SuperLU variable structure
 //These are the working variables, but structured for island implementation
@@ -71,8 +72,8 @@ typedef struct {
 //Initialize the sparse notation
 void sparse_init(SPARSE* sm, int nels, int ncols)
 {
-	if (solver_profile_enable) 
-	{
+	if ( solver_profile_enable ) 
+	{	
 		nr_profile = fopen(solver_profile_filename,"w");
 		if ( nr_profile == NULL ) 
 		{
@@ -83,7 +84,16 @@ void sparse_init(SPARSE* sm, int nels, int ncols)
 		}
 		else if ( solver_profile_headers_included )
 		{
-			fprintf(nr_profile,"%s\n",(const char*)solver_headers);
+			if ( solver_profile_csv )
+			{
+
+				fprintf(nr_profile,"%s\n",(const char*)solver_headers);
+			}
+			else
+			{
+				fprintf(nr_profile,"timestamp               duration[microsec] iteration bus_count branch_count error\n");
+				fprintf(nr_profile,"----------------------- ------------------ --------- --------- ------------ -----\n");
+			}
 		}
 	}
 	int indexval;
@@ -335,10 +345,11 @@ int64 solver_nr(unsigned int bus_count,
 		if ( solver_python_init() == 0 )
 		{
 			Iteration = solver_python_solve(bus_count,bus,branch_count,branch,powerflow_values,powerflow_type,mesh_imped_vals,bad_computations,Iteration);
-			if ( Iteration >= 0 )
+			if ( Iteration == 0 )
 			{		
 					return Iteration;
 			}
+			// else <0 proceed with NR solver
 		}
 	}
 	catch (const char *msg)
@@ -5027,7 +5038,7 @@ int64 solver_nr(unsigned int bus_count,
 			}
 			//Default else - it was a failure, just keep going
 		}
-		Iteration = return_value_for_solver_NR;
+		Iteration = return_value_for_solver_NR+1;
 
 		//Deflag the "island locker"
 		NR_solver_working = false;
@@ -5064,7 +5075,16 @@ int64 solver_nr(unsigned int bus_count,
 			double t = clock() - t_start;	
 			char buffer[64];
 			if ( gl_printtime(gl_globalclock,buffer,sizeof(buffer)-1) > 0 )
-				fprintf(nr_profile, "%s,%.1f,%.1lld,%d,%d,%s\n", buffer, t, return_value_for_solver_NR == 0 ? 1 : return_value_for_solver_NR,bus_count,branch_count,bad_computations ? "false" : "true");
+			{
+				if ( solver_profile_csv )
+				{
+					fprintf(nr_profile, "%s,%.1f,%.1lld,%d,%d,%d\n", buffer, t, Iteration,bus_count,branch_count,bad_computations ? 0 : 1);
+				}
+				else
+				{
+					fprintf(nr_profile, "%s %18.1f %9lld %9d %12d %s\n", buffer, t, Iteration,bus_count,branch_count,bad_computations ? "no" : "yes");
+				}
+			}
 		}
 				
 		//Return the maximum iteration count
diff --git a/module/powerflow/solver_py.cpp b/module/powerflow/solver_py.cpp
index 58d4f1c1d..a98325eeb 100644
--- a/module/powerflow/solver_py.cpp
+++ b/module/powerflow/solver_py.cpp
@@ -962,11 +962,11 @@ void sync_busdata_raw(PyObject *pModel,unsigned int &bus_count,BUSDATA *&bus,e_d
 			SET_BUS(n,17,bus[n].I[2].i);
 
 			SET_BUS(n,18,bus[n].V[0].Mag());
-			SET_BUS(n,19,bus[n].V[0].Ang());
+			SET_BUS(n,19,bus[n].V[0].Arg());
 			SET_BUS(n,20,bus[n].V[1].Mag());
-			SET_BUS(n,21,bus[n].V[1].Ang());
+			SET_BUS(n,21,bus[n].V[1].Arg());
 			SET_BUS(n,22,bus[n].V[2].Mag());
-			SET_BUS(n,23,bus[n].V[2].Ang());
+			SET_BUS(n,23,bus[n].V[2].Arg());
 		}
 	}
 	else if ( dir == ED_IN )
@@ -1165,6 +1165,13 @@ unsigned long long get_linkhash(unsigned int branch_count, BRANCHDATA *&branch,
     return hashcode;
 }
 
+// Run python solver
+//
+// Returns:
+//   -1 call NR and initialize with guess
+//    0 use guess and proceed without running NR
+//   <-1 error encountered, run NR and don't use the guess
+//
 int solver_python_solve (
 	unsigned int &bus_count,
 	BUSDATA *&bus,
@@ -1192,7 +1199,7 @@ int solver_python_solve (
 		else if ( pResult && PyLong_Check(pResult) )
 		{
 			result = PyLong_AsLong(pResult);
-			if ( result >= 0 )
+			if ( result == -1 || result == 0 ) // -1 means no solution but guess is ok, 0 means solution is ok
 			{
 				sync_model(bus_count,bus,branch_count,branch,ED_IN);
 			}
diff --git a/source/cmdarg.cpp b/source/cmdarg.cpp
index b83317744..07aa5d58f 100644
--- a/source/cmdarg.cpp
+++ b/source/cmdarg.cpp
@@ -378,15 +378,15 @@ int GldCmdarg::profile(int argc, const char *argv[])
 	const char *opt = strchr(argv[0],'=');
 	if ( opt++ != NULL )
 	{
-		if ( strcmp(opt,"text") == 0 )
+		if ( stricmp(opt,"text") == 0 || stricmp(opt,"txt") == 0 )
 		{
 			global_profile_output_format = POF_TEXT;
 		}
-		else if ( strcmp(opt,"csv") == 0 )
+		else if ( stricmp(opt,"csv") == 0 )
 		{
 			global_profile_output_format = POF_CSV;
 		}
-		else if ( strcmp(opt,"json") == 0 )
+		else if ( stricmp(opt,"json") == 0 )
 		{
 			global_profile_output_format = POF_JSON;
 		}
@@ -395,8 +395,12 @@ int GldCmdarg::profile(int argc, const char *argv[])
 			output_error("profiler option '%s' is not valid",opt);
 			return CMDERR;
 		}
+		global_profiler = TRUE;
+	}
+	else
+	{
+		global_profiler = !global_profiler;
 	}
-	global_profiler = !global_profiler;
 	return 0;
 }