diff --git a/source/dub/generators/build.d b/source/dub/generators/build.d
index 15e284b..dda7bb1 100644
--- a/source/dub/generators/build.d
+++ b/source/dub/generators/build.d
@@ -65,7 +65,7 @@
 		prepareGeneration(buildsettings);
 
 		// determine the absolute target path
-		if( !Path(buildsettings.targetPath).absolute )
+		if (!Path(buildsettings.targetPath).absolute)
 			buildsettings.targetPath = (m_project.mainPackage.path ~ Path(buildsettings.targetPath)).toNativeString();
 
 		// make all target/import paths relative
@@ -77,7 +77,7 @@
 		Path exe_file_path;
 		bool is_temp_target = false;
 		if (generate_binary) {
-			if (settings.run && !isWritableDir(Path(buildsettings.targetPath))) {
+			if (settings.run && !isWritableDir(Path(buildsettings.targetPath), true)) {
 				import std.random;
 				auto rnd = to!string(uniform(uint.min, uint.max));
 				buildsettings.targetPath = (tmp~"dub/"~rnd).toNativeString();
@@ -156,12 +156,16 @@
 		// copy files and run the executable
 		if (generate_binary && settings.run) {
 			if (buildsettings.targetType == TargetType.executable) {
+				auto runcwd = cwd;
 				if (buildsettings.workingDirectory.length) {
-					logDiagnostic("Switching to %s", (cwd ~ buildsettings.workingDirectory).toNativeString());
-					chdir((cwd ~ buildsettings.workingDirectory).toNativeString());
+					runcwd = cwd ~ buildsettings.workingDirectory;
+					logDiagnostic("Switching to %s", runcwd.toNativeString());
+					chdir(runcwd.toNativeString());
 				}
 				scope(exit) chdir(cwd.toNativeString());
-				logInfo("Running %s...", exe_file_path.toNativeString());
+				if (!exe_file_path.absolute) exe_file_path = cwd ~ exe_file_path;
+				exe_file_path = exe_file_path.relativeTo(runcwd);
+				logInfo("Running %s %s", exe_file_path.toNativeString(), settings.runArgs.join(" "));
 				auto prg_pid = spawnProcess(exe_file_path.toNativeString() ~ settings.runArgs);
 				auto result = prg_pid.wait();
 				enforce(result == 0, "Program exited with code "~to!string(result));
diff --git a/source/dub/generators/rdmd.d b/source/dub/generators/rdmd.d
index ac627ff..2ee3bee 100644
--- a/source/dub/generators/rdmd.d
+++ b/source/dub/generators/rdmd.d
@@ -59,7 +59,7 @@
 		Path run_exe_file;
 		bool tmp_target = false;
 		if (generate_binary) {
-			if (settings.run && !isWritableDir(Path(buildsettings.targetPath))) {
+			if (settings.run && !isWritableDir(Path(buildsettings.targetPath), true)) {
 				import std.random;
 				auto rnd = to!string(uniform(uint.min, uint.max)) ~ "-";
 				buildsettings.targetPath = (getTempDir()~".rdmd/source/").toNativeString();
@@ -101,11 +101,16 @@
 		if (generate_binary && settings.run) {
 			if (buildsettings.targetType == TargetType.executable) {
 				auto cwd = Path(getcwd());
-				if (buildsettings.workingDirectory.length) {
-					logDiagnostic("Switching to %s", (cwd ~ buildsettings.workingDirectory).toNativeString());
-					chdir((cwd ~ buildsettings.workingDirectory).toNativeString());
-				}
+				auto runcwd = cwd;
+				if (buildsettings.workingDirectory.length)
+					runcwd = cwd ~ buildsettings.workingDirectory;
+				logDiagnostic("Switching to %s", runcwd.toNativeString());
+				chdir(runcwd.toNativeString());
 				scope(exit) chdir(cwd.toNativeString());
+
+				if (!run_exe_file.absolute) run_exe_file = cwd ~ run_exe_file;
+				run_exe_file = run_exe_file.relativeTo(runcwd);
+
 				logInfo("Running %s...", run_exe_file.toNativeString());
 				auto prg_pid = spawnProcess(run_exe_file.toNativeString() ~ settings.runArgs);
 				result = prg_pid.wait();
diff --git a/source/dub/internal/utils.d b/source/dub/internal/utils.d
index 47e2c59..97ebe8d 100644
--- a/source/dub/internal/utils.d
+++ b/source/dub/internal/utils.d
@@ -43,10 +43,11 @@
 	return true;
 }
 
-bool isWritableDir(Path p)
+bool isWritableDir(Path p, bool create_if_missing = false)
 {
 	import std.random;
 	auto fname = p ~ format("__dub_write_test_%08X", uniform(0, uint.max));
+	if (create_if_missing && !exists(p.toNativeString())) mkdirRecurse(p.toNativeString());
 	try openFile(fname, FileMode.CreateTrunc).close();
 	catch return false;
 	remove(fname.toNativeString());
diff --git a/source/dub/internal/vibecompat/inet/path.d b/source/dub/internal/vibecompat/inet/path.d
index f76ac75..51564b9 100644
--- a/source/dub/internal/vibecompat/inet/path.d
+++ b/source/dub/internal/vibecompat/inet/path.d
@@ -133,6 +133,7 @@
 	
 	/// Computes the relative path from `parentPath` to this path.
 	Path relativeTo(const Path parentPath) const {
+		assert(this.absolute && parentPath.absolute);
 		version(Windows){
 			// a path such as ..\C:\windows is not valid, so force the path to stay absolute in this case
 			if( this.absolute && !this.empty && m_nodes[0].toString().endsWith(":") &&