diff --git a/src_main/thread/pithread.cpp b/src_main/thread/pithread.cpp
index e51b34ba..5780c114 100755
--- a/src_main/thread/pithread.cpp
+++ b/src_main/thread/pithread.cpp
@@ -212,7 +212,9 @@ PIThread::~PIThread() {
 
 bool PIThread::start(int timer_delay) {
 	if (running_) return false;
-	terminating = running_ = false;
+	//if (terminating) waitForFinish();
+	terminating = false;
+	running_ = true;
 	delay_ = timer_delay;
 #ifndef WINDOWS
 	pthread_attr_t attr;
@@ -242,19 +244,22 @@ bool PIThread::start(int timer_delay) {
 	if (PRIVATE->thread != 0) {
 #endif
 		setPriority(priority_);
-		running_ = true;
 		return true;
 	} else {
+		running_ = false;
 		PRIVATE->thread = 0;
 		piCoutObj << "Error: Can`t start new thread:" << errorString();
 	}
+	running_ = false;
 	return false;
 }
 
 
 bool PIThread::startOnce() {
+	if (terminating) waitForFinish();
 	if (running_) return false;
-	terminating = running_ = false;
+	terminating = false;
+	running_ = true;
 #ifndef WINDOWS
 	pthread_attr_t attr;
 	pthread_attr_init(&attr);
@@ -263,7 +268,7 @@ bool PIThread::startOnce() {
 #  endif
 	pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
 	int ret = pthread_create(&(PRIVATE->thread), &attr, thread_function_once, this);
-	//piCout << "pthread_create" << PRIVATE->thread;
+	piCout << "pthread_create" << PRIVATE->thread;
 	pthread_attr_destroy(&attr);
 	if (ret == 0) {
 #  ifdef MAC_OS
@@ -283,12 +288,13 @@ bool PIThread::startOnce() {
 	if (PRIVATE->thread != 0) {
 #endif
 		setPriority(priority_);
-		running_ = true;
 		return true;
 	} else {
+		running_ = false;
 		PRIVATE->thread = 0;
 		piCoutObj << "Error: Can`t start new thread:" << errorString();
 	}
+	running_ = false;
 	return false;
 }
 
@@ -463,7 +469,7 @@ void PIThread::__thread_func__(void * t) {
 	ct.terminating = ct.running_ = false;
 	ct.tid_ = -1;
 	//cout << "thread " << t << " exiting ... " << endl;
-	//piCout << "pthread_exit" << (ct.__privateinitializer__.p)->thread;
+	piCout << "pthread_exit" << (ct.__privateinitializer__.p)->thread;
 	UNREGISTER_THREAD(&ct);
 	PIINTROSPECTION_UNREGISTER_THREAD(ct.tid());
 #ifndef WINDOWS
@@ -512,7 +518,7 @@ void PIThread::__thread_func_once__(void * t) {
 	ct.terminating = ct.running_ = false;
 	ct.tid_ = -1;
 	//cout << "thread " << t << " exiting ... " << endl;
-	//piCout << "pthread_exit" << (ct.__privateinitializer__.p)->thread;
+	piCout << "pthread_exit" << (ct.__privateinitializer__.p)->thread;
 	UNREGISTER_THREAD(&ct);
 	PIINTROSPECTION_UNREGISTER_THREAD(ct.tid());
 #ifndef WINDOWS