diff --git a/hub/src/updater/ExecutableUpdater.cpp b/hub/src/updater/ExecutableUpdater.cpp
index f6b41c06..ea633017 100644
--- a/hub/src/updater/ExecutableUpdater.cpp
+++ b/hub/src/updater/ExecutableUpdater.cpp
@@ -46,6 +46,10 @@ CExecutableUpdater::replace_executables(bool was_successful_downloaded) {
   CSystemCallWrapper::give_write_permissions(dir);
 
   do {    
+    if (!src.exists()) {
+        qCritical("Source file is missins at %s", m_src_file_str.toStdString().c_str());
+        break;
+    }
     if (dst.exists()) {
       QFile ftmp(tmp);
       if (ftmp.exists() && !ftmp.remove()) {
diff --git a/version b/version
index c968a576..d9edd15e 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-7.3.4
+7.3.5