diff --git a/src/Makefile.am b/src/Makefile.am
index f70b0923..7493bdf6 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -38,6 +38,8 @@ rtorrent_SOURCES = \
 	option_parser.cc \
 	option_parser.h \
 	signal_handler.cc \
-	signal_handler.h
+	signal_handler.h \
+	thread_base.cc \
+	thread_base.h
 
 INCLUDES = -I$(srcdir) -I$(top_srcdir)
diff --git a/src/command_download.cc b/src/command_download.cc
index 5918aff2..60436622 100644
--- a/src/command_download.cc
+++ b/src/command_download.cc
@@ -298,6 +298,9 @@ torrent::Object
 retrieve_d_bitfield(core::Download* download) {
   const torrent::Bitfield* bitField = download->download()->file_list()->bitfield();
 
+  if (bitField->empty())
+    return torrent::Object("");
+
   return torrent::Object(rak::transform_hex(bitField->begin(), bitField->end()));
 }
 
@@ -307,7 +310,7 @@ cmd_d_initialize_logs(core::Download* download) {
   download->download()->signal_network_log(sigc::mem_fun(control->core(), &core::Manager::push_log_complete));
   download->download()->signal_storage_error(sigc::mem_fun(control->core(), &core::Manager::push_log_complete));
 
-  if (!rpc::call_command_string("get_tracker_dump").empty())
+  if (!rpc::call_command_string("get_log.tracker").empty())
     download->download()->signal_tracker_dump(sigc::ptr_fun(&core::receive_tracker_dump));
 
   return torrent::Object();
diff --git a/src/core/manager.cc b/src/core/manager.cc
index d7a8c765..62738cab 100644
--- a/src/core/manager.cc
+++ b/src/core/manager.cc
@@ -77,7 +77,7 @@ namespace core {
 
 void
 receive_tracker_dump(const std::string& url, const char* data, size_t size) {
-  const std::string& filename = rpc::call_command_string("get_tracker_dump");
+  const std::string& filename = rpc::call_command_string("get_log.tracker");
 
   if (filename.empty())
     return;
diff --git a/src/globals.cc b/src/globals.cc
index 2d04ddfe..42bec88a 100644
--- a/src/globals.cc
+++ b/src/globals.cc
@@ -42,5 +42,5 @@ rak::priority_queue_default taskScheduler;
 rak::timer                  cachedTime;
 
 Control*                    control = NULL;
-//__thread utils::ThreadBase* this_thread = NULL;
-utils::ThreadBase* this_thread = NULL;
+//__thread ThreadBase* this_thread = NULL;
+ThreadBase* this_thread = NULL;
diff --git a/src/globals.h b/src/globals.h
index 165d433b..ea25a3e5 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -40,7 +40,7 @@
 #include <rak/timer.h>
 #include <rak/priority_queue_default.h>
 
-#include "utils/thread_base.h"
+#include "thread_base.h"
 
 class Control;
 
@@ -53,7 +53,7 @@ extern rak::priority_queue_default taskScheduler;
 extern rak::timer                  cachedTime;
 
 extern Control*                    control;
-// extern __thread utils::ThreadBase* this_thread; // Only use for worker threads for now.
-extern utils::ThreadBase* this_thread; // Only use for main threads for now.
+// extern __thread ThreadBase* this_thread; // Only use for worker threads for now.
+extern ThreadBase* this_thread; // Only use for main threads for now.
 
 #endif
diff --git a/src/main.cc b/src/main.cc
index 18e904bb..b8427178 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -154,7 +154,7 @@ main(int argc, char** argv) {
 
     control = new Control;
     
-    this_thread = new utils::ThreadBase();
+    this_thread = new ThreadBase();
     this_thread->init_thread();
 
     srandom(cachedTime.usec());
diff --git a/src/rpc/exec_file.cc b/src/rpc/exec_file.cc
index b2dd8acf..f1fb9018 100644
--- a/src/rpc/exec_file.cc
+++ b/src/rpc/exec_file.cc
@@ -123,6 +123,8 @@ ExecFile::execute(const char* file, char* const* argv, int flags) {
           m_capture += std::string(buffer, length);
       } while (length > 0);
 
+      ::close(pipeFd[0]);
+
       if (m_logFd != -1) {
         write(m_logFd, "Captured output:\n", sizeof("Captured output:\n"));
         write(m_logFd, m_capture.data(), m_capture.length());
diff --git a/src/utils/thread_base.cc b/src/thread_base.cc
similarity index 99%
rename from src/utils/thread_base.cc
rename to src/thread_base.cc
index bef62b7e..dec63825 100644
--- a/src/utils/thread_base.cc
+++ b/src/thread_base.cc
@@ -43,8 +43,6 @@
 
 #include "globals.h"
 
-namespace utils {
-
 // Temporarly injected into config.h.
 /* temp hack */
 //#define __cacheline_aligned __attribute__((__aligned__(128)))
@@ -155,5 +153,3 @@ ThreadBase::init_thread() {
 // ThreadBase::queue_item(thread_base_func newFunc) {
 //   m_threadQueue->push_back(newFunc);
 // }
-
-}
diff --git a/src/utils/thread_base.h b/src/thread_base.h
similarity index 99%
rename from src/utils/thread_base.h
rename to src/thread_base.h
index 1442710d..5684924b 100644
--- a/src/utils/thread_base.h
+++ b/src/thread_base.h
@@ -41,8 +41,6 @@
 #include "rak/priority_queue_default.h"
 #include "core/poll_manager.h"
 
-namespace utils {
-
 struct thread_queue_hack;
 
 // Move this class to libtorrent.
@@ -82,6 +80,4 @@ private:
 //   thread_queue_hack*  m_threadQueue;
 };
 
-}
-
 #endif
diff --git a/src/utils/Makefile.am b/src/utils/Makefile.am
index f2daa2bb..55ea9ff1 100644
--- a/src/utils/Makefile.am
+++ b/src/utils/Makefile.am
@@ -9,8 +9,6 @@ libsub_utils_a_SOURCES = \
 	lockfile.cc \
 	lockfile.h \
 	socket_fd.cc \
-	socket_fd.h \
-	thread_base.cc \
-	thread_base.h
+	socket_fd.h
 
 INCLUDES = -I$(srcdir) -I$(srcdir)/.. -I$(top_srcdir)