diff --git a/Ghidra/Features/Base/src/main/java/ghidra/app/util/headless/AnalyzeHeadless.java b/Ghidra/Features/Base/src/main/java/ghidra/app/util/headless/AnalyzeHeadless.java
index 3ed273a01f..5b44ba640a 100644
--- a/Ghidra/Features/Base/src/main/java/ghidra/app/util/headless/AnalyzeHeadless.java
+++ b/Ghidra/Features/Base/src/main/java/ghidra/app/util/headless/AnalyzeHeadless.java
@@ -212,10 +212,10 @@ public class AnalyzeHeadless implements GhidraLaunchable {
 				options.setPropertiesFileDirectories(args[++argi]);
 			}
 			else if (checkArgument("-import", args, argi)) {
-				File inputFile = new File(args[++argi]);
+				File inputFile = new File(args[++argi]).getAbsoluteFile();
 				if (!inputFile.isDirectory() && !inputFile.isFile()) {
 					throw new InvalidInputException(
-						inputFile.getAbsolutePath() + " is not a valid directory or file.");
+						inputFile + " is not a valid directory or file.");
 				}
 
 				HeadlessAnalyzer.checkValidFilename(inputFile);
@@ -234,10 +234,10 @@ public class AnalyzeHeadless implements GhidraLaunchable {
 						break;
 					}
 
-					File otherFile = new File(nextArg);
+					File otherFile = new File(nextArg).getAbsoluteFile();
 					if (!otherFile.isFile() && !otherFile.isDirectory()) {
 						throw new InvalidInputException(
-							otherFile.getAbsolutePath() + " is not a valid directory or file.");
+							otherFile + " is not a valid directory or file.");
 					}
 
 					HeadlessAnalyzer.checkValidFilename(otherFile);
diff --git a/Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/LocalFileSystem.java b/Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/LocalFileSystem.java
index 253e4f3e0c..81878c5471 100644
--- a/Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/LocalFileSystem.java
+++ b/Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/LocalFileSystem.java
@@ -115,13 +115,17 @@ public class LocalFileSystem implements GFileSystem, GFileHashProvider {
 
 	/**
 	 * Converts a {@link File} into a {@link FSRL}.
+	 * <p>
+	 * NOTE: The given {@link File}'s absolute path will be used.
 	 * 
-	 * @param f {@link File}
-	 * @return {@link FSRL}
+	 * @param f The {@link File} to convert to an {@link FSRL}
+	 * @return The {@link FSRL}
 	 */
 	public FSRL getLocalFSRL(File f) {
-		return fsFSRL
-				.withPath(FSUtilities.appendPath("/", FilenameUtils.separatorsToUnix(f.getPath())));
+		// We prepend a "/" to ensure that Windows-style paths (i.e. C:\) start with a "/".  For
+		// unix-style paths, this redundant "/" will be dropped.
+		return fsFSRL.withPath(
+			FSUtilities.appendPath("/", FilenameUtils.separatorsToUnix(f.getAbsolutePath())));
 	}
 
 	@Override
diff --git a/Ghidra/Features/Base/src/main/java/ghidra/program/flatapi/FlatProgramAPI.java b/Ghidra/Features/Base/src/main/java/ghidra/program/flatapi/FlatProgramAPI.java
index 9d8ee3b36c..4d5f7bdc56 100644
--- a/Ghidra/Features/Base/src/main/java/ghidra/program/flatapi/FlatProgramAPI.java
+++ b/Ghidra/Features/Base/src/main/java/ghidra/program/flatapi/FlatProgramAPI.java
@@ -43,7 +43,6 @@ import ghidra.program.model.symbol.*;
 import ghidra.program.model.util.CodeUnitInsertionException;
 import ghidra.program.util.AddressEvaluator;
 import ghidra.program.util.string.*;
-import ghidra.util.Conv;
 import ghidra.util.ascii.AsciiCharSetRecognizer;
 import ghidra.util.datastruct.Accumulator;
 import ghidra.util.datastruct.ListAccumulator;
@@ -154,16 +153,14 @@ public class FlatProgramAPI {
 	}
 
 	/**
-	 * Returns the path to the program's executable file.
+	 * Returns the {@link File} that the program was originally imported from.  It does not 
+	 * necessarily still exist on the file system.
+	 * <p>
 	 * For example, <code>c:\temp\test.exe</code>.
-	 * @return path to program's executable file
+	 * @return the {@link File} that the program was originally imported from
 	 */
 	public final File getProgramFile() {
-		File f = new File(currentProgram.getExecutablePath());
-		if (f.exists()) {
-			return f;
-		}
-		return null;
+		return new File(currentProgram.getExecutablePath());
 	}
 
 	/**
@@ -1916,7 +1913,7 @@ public class FlatProgramAPI {
 	 * @return a new address with the specified offset in the default address space
 	 */
 	public final Address toAddr(int offset) {
-		return toAddr(offset & Conv.INT_MASK);
+		return toAddr(Integer.toUnsignedLong(offset));
 	}
 
 	/**