diff --git a/src/io/pisharedmemory.cpp b/src/io/pisharedmemory.cpp
index 35aba568..0cc5a6a2 100644
--- a/src/io/pisharedmemory.cpp
+++ b/src/io/pisharedmemory.cpp
@@ -213,28 +213,39 @@ llong PISharedMemory::size() const {
 
 
 int PISharedMemory::read(void * read_to, int max_size) {
+	return read(read_to, max_size, 0);
+}
+
+
+int PISharedMemory::read(void * read_to, int max_size, int offset) {
 #ifdef WINDOWS
 	if (!PRIVATE->data) return -1;
-	CopyMemory(read_to, PRIVATE->data, max_size);
+	CopyMemory(read_to, &(((char*)(PRIVATE->data))[offset]), max_size);
 	return max_size;
 #endif
 #ifdef LINUX
 	if (!PRIVATE->data) return -1;
-	memcpy(read_to, PRIVATE->data, max_size);
+	memcpy(read_to, &(((char*)(PRIVATE->data))[offset]), max_size);
 	return max_size;
 #endif
+
 }
 
 
 int PISharedMemory::write(const void * data, int max_size) {
+	return write(data, max_size, 0);
+}
+
+
+int PISharedMemory::write(const void * data, int max_size, int offset) {
 #ifdef WINDOWS
 	if (!PRIVATE->data) return -1;
-	CopyMemory(PRIVATE->data, data, max_size);
+	CopyMemory(&(((char*)(PRIVATE->data))[offset]), data, max_size);
 	return max_size;
 #endif
 #ifdef LINUX
 	if (!PRIVATE->data) return -1;
-	memcpy(PRIVATE->data, data, max_size);
+	memcpy(&(((char*)(PRIVATE->data))[offset]), data, max_size);
 	return max_size;
 #endif
 }
diff --git a/src/io/pisharedmemory.h b/src/io/pisharedmemory.h
index b26c1e5f..d64e46c5 100644
--- a/src/io/pisharedmemory.h
+++ b/src/io/pisharedmemory.h
@@ -51,12 +51,21 @@ public:
 	
 	//! Read from shared memory object to "read_to" no more than "max_size" and return readed bytes count
 	int read(void * read_to, int max_size);
+
+	//! Read from shared memory object to "read_to" no more than "max_size" and return readed bytes count
+	int read(void * read_to, int max_size, int offset);
 	
 	//! Write to shared memory object "data" with size "max_size" and return written bytes count
 	int write(const void * data, int max_size);
 
+	//! Write to shared memory object "data" with size "max_size" and return written bytes count
+	int write(const void * data, int max_size, int offset);
+
 	//! Write "data" to shared memory object
 	int write(const PIByteArray & data) {return write(data.data(), data.size_s());}
+
+	//! Write "data" to shared memory object
+	int write(const PIByteArray & data, int offset) {return write(data.data(), data.size_s(), offset);}
 	
 
 protected:
diff --git a/src/system/piprocess.cpp b/src/system/piprocess.cpp
index a04e253b..962afe38 100755
--- a/src/system/piprocess.cpp
+++ b/src/system/piprocess.cpp
@@ -145,7 +145,7 @@ void PIProcess::startProc(bool detached) {
 		0,         // Process handle not inheritable
 		0,         // Thread handle not inheritable
 		false,     // Set handle inheritance to FALSE
-		detached ? DETACHED_PROCESS : 0, // Creation flags
+		detached ? DETACHED_PROCESS/*CREATE_NEW_CONSOLE*/ : 0, // Creation flags
 		0,//e,         // Use environment
 		wd.isEmpty() ? 0 : wd.data(), // Use working directory
 		&si,       // Pointer to STARTUPINFO structure
diff --git a/src/system/pisingleapplication.h b/src/system/pisingleapplication.h
index 80f45673..45e8906f 100644
--- a/src/system/pisingleapplication.h
+++ b/src/system/pisingleapplication.h
@@ -24,7 +24,7 @@
 
 class PISharedMemory;
 
-class PIP_EXPORT PISingleApplication: protected PIThread {
+class PIP_EXPORT PISingleApplication: public PIThread {
 	PIOBJECT_SUBCLASS(PISingleApplication, PIThread)
 public:
 	PISingleApplication(const PIString & app_name = PIString());