diff --git a/prism/src/automata/DA.java b/prism/src/automata/DA.java
index 896f7aee..7b3bc5b4 100644
--- a/prism/src/automata/DA.java
+++ b/prism/src/automata/DA.java
@@ -323,6 +323,24 @@ public class DA<Symbol, Acceptance extends AcceptanceOmega>
 		}
 	}
 
+	/**
+	 * Print automaton to a PrintStream in a specified format ("dot", "txt" or "hoa").
+	 */
+	public void print(PrintStream out, String type) throws PrismException
+	{
+		switch (type) {
+		case "txt":
+			out.println(toString());
+			break;
+		case "dot":
+			printDot(out);
+			break;
+		case "hoa":
+			printHOA(out);
+			break;
+		}
+	}
+
 	// Standard methods
 
 	@Override
diff --git a/prism/src/explicit/LTLModelChecker.java b/prism/src/explicit/LTLModelChecker.java
index cca48098..531d1092 100644
--- a/prism/src/explicit/LTLModelChecker.java
+++ b/prism/src/explicit/LTLModelChecker.java
@@ -28,6 +28,7 @@
 package explicit;
 
 import java.awt.Point;
+import java.io.PrintStream;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.BitSet;
@@ -49,10 +50,9 @@ import parser.type.TypePathBool;
 import prism.ModelType;
 import prism.PrismComponent;
 import prism.PrismException;
-import prism.PrismFileLog;
 import prism.PrismLangException;
-import prism.PrismLog;
 import prism.PrismNotSupportedException;
+import prism.PrismUtils;
 import acceptance.AcceptanceGenRabin;
 import acceptance.AcceptanceOmega;
 import acceptance.AcceptanceRabin;
@@ -60,6 +60,7 @@ import acceptance.AcceptanceStreett;
 import acceptance.AcceptanceType;
 import automata.DA;
 import automata.LTL2DA;
+
 import common.IterableStateSet;
 
 /**
@@ -250,7 +251,7 @@ public class LTLModelChecker extends PrismComponent
 		// If required, export DA
 		if (settings.getExportPropAut()) {
 			mainLog.println("Exporting " + da.getAutomataType() + " to file \"" + settings.getExportPropAutFilename() + "\"...");
-			PrismLog out = new PrismFileLog(settings.getExportPropAutFilename());
+			PrintStream out = PrismUtils.newPrintStream(settings.getExportPropAutFilename());
 			da.print(out, settings.getExportPropAutType());
 			out.close();
 		}
diff --git a/prism/src/prism/MultiObjModelChecker.java b/prism/src/prism/MultiObjModelChecker.java
index 60e12fd4..d4032200 100644
--- a/prism/src/prism/MultiObjModelChecker.java
+++ b/prism/src/prism/MultiObjModelChecker.java
@@ -29,6 +29,7 @@
 package prism;
 
 import java.io.FileNotFoundException;
+import java.io.PrintStream;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.BitSet;
@@ -93,7 +94,7 @@ public class MultiObjModelChecker extends PrismComponent
 		if (prism.getSettings().getExportPropAut()) {
 			String exportPropAutFilename = PrismUtils.addCounterSuffixToFilename(prism.getSettings().getExportPropAutFilename(), i + 1);
 			mainLog.println("Exporting DRA to file \"" + exportPropAutFilename + "\"...");
-			PrismLog out = new PrismFileLog(exportPropAutFilename);
+			PrintStream out = PrismUtils.newPrintStream(exportPropAutFilename);
 			dra[i].print(out, settings.getExportPropAutType());
 			out.close();
 		}
diff --git a/prism/src/prism/NondetModelChecker.java b/prism/src/prism/NondetModelChecker.java
index eefb5406..72f5d0de 100644
--- a/prism/src/prism/NondetModelChecker.java
+++ b/prism/src/prism/NondetModelChecker.java
@@ -33,6 +33,7 @@ import hybrid.PrismHybrid;
 
 import java.io.File;
 import java.io.FileNotFoundException;
+import java.io.PrintStream;
 import java.util.ArrayList;
 import java.util.BitSet;
 import java.util.List;
@@ -1180,7 +1181,7 @@ public class NondetModelChecker extends NonProbModelChecker
 		// If required, export DA 
 		if (prism.getSettings().getExportPropAut()) {
 			mainLog.println("Exporting DA to file \"" + prism.getSettings().getExportPropAutFilename() + "\"...");
-			PrismLog out = new PrismFileLog(prism.getSettings().getExportPropAutFilename());
+			PrintStream out = PrismUtils.newPrintStream(prism.getSettings().getExportPropAutFilename());
 			da.print(out, prism.getSettings().getExportPropAutType());
 			out.close();
 		}
@@ -1427,7 +1428,7 @@ public class NondetModelChecker extends NonProbModelChecker
 		// If required, export DA 
 		if (prism.getSettings().getExportPropAut()) {
 			mainLog.println("Exporting DA to file \"" + prism.getSettings().getExportPropAutFilename() + "\"...");
-			PrismLog out = new PrismFileLog(prism.getSettings().getExportPropAutFilename());
+			PrintStream out = PrismUtils.newPrintStream(prism.getSettings().getExportPropAutFilename());
 			da.print(out, prism.getSettings().getExportPropAutType());
 			out.close();
 			//da.printDot(new java.io.PrintStream("da.dot"));
diff --git a/prism/src/prism/PrismSettings.java b/prism/src/prism/PrismSettings.java
index c01b44b6..536c82ac 100644
--- a/prism/src/prism/PrismSettings.java
+++ b/prism/src/prism/PrismSettings.java
@@ -1500,6 +1500,8 @@ public class PrismSettings implements Observer
 						setExportPropAutType("txt");
 				    } else if (option.getKey().equals("dot")) {
 						setExportPropAutType("dot");
+				    } else if (option.getKey().equals("hoa")) {
+						setExportPropAutType("hoa");
 				    } else {
 				    		throw new PrismException("Unknown option \"" + option.getKey() + "\" for -" + sw + " switch"); 
 				    }
diff --git a/prism/src/prism/PrismUtils.java b/prism/src/prism/PrismUtils.java
index b7a5161e..877d7204 100644
--- a/prism/src/prism/PrismUtils.java
+++ b/prism/src/prism/PrismUtils.java
@@ -26,6 +26,8 @@
 
 package prism;
 
+import java.io.FileNotFoundException;
+import java.io.PrintStream;
 import java.text.DecimalFormat;
 import java.text.DecimalFormatSymbols;
 import java.util.List;
@@ -336,6 +338,18 @@ public class PrismUtils
 			System.out.println(s + " => " + PrismUtils.convertMemoryStringtoKB(s) * 1024 + " => " + PrismUtils.convertBytesToMemoryString(PrismUtils.convertMemoryStringtoKB(s) * 1024));
 		}*/
 	}
+	
+	/**
+	 * Utility method to create a new PrintStream for a file, but any errors are converted to PrismExceptions
+	 */
+	public static PrintStream newPrintStream(String filename) throws PrismException
+	{
+		try {
+			return new PrintStream(filename);
+		} catch (FileNotFoundException e) {
+			throw new PrismException("File \"" + filename + "\" could not opened for output");
+		}
+	}
 }
 
 //------------------------------------------------------------------------------
diff --git a/prism/src/prism/ProbModelChecker.java b/prism/src/prism/ProbModelChecker.java
index aae22239..19fb8c05 100644
--- a/prism/src/prism/ProbModelChecker.java
+++ b/prism/src/prism/ProbModelChecker.java
@@ -30,6 +30,7 @@ import hybrid.PrismHybrid;
 
 import java.io.File;
 import java.io.FileNotFoundException;
+import java.io.PrintStream;
 import java.util.BitSet;
 import java.util.List;
 import java.util.Vector;
@@ -558,7 +559,7 @@ public class ProbModelChecker extends NonProbModelChecker
 		// If required, export DA
 		if (prism.getSettings().getExportPropAut()) {
 			mainLog.println("Exporting DA to file \"" + prism.getSettings().getExportPropAutFilename() + "\"...");
-			PrismLog out = new PrismFileLog(prism.getSettings().getExportPropAutFilename());
+			PrintStream out = PrismUtils.newPrintStream(prism.getSettings().getExportPropAutFilename());
 			da.print(out, prism.getSettings().getExportPropAutType());
 			out.close();
 		}
@@ -962,7 +963,7 @@ public class ProbModelChecker extends NonProbModelChecker
 		// If required, export DA 
 		if (prism.getSettings().getExportPropAut()) {
 			mainLog.println("Exporting DA to file \"" + prism.getSettings().getExportPropAutFilename() + "\"...");
-			PrismLog out = new PrismFileLog(prism.getSettings().getExportPropAutFilename());
+			PrintStream out = PrismUtils.newPrintStream(prism.getSettings().getExportPropAutFilename());
 			da.print(out, prism.getSettings().getExportPropAutType());
 			out.close();
 			//da.printDot(new java.io.PrintStream("da.dot"));