diff --git a/harp.py b/harp.py
index 45df362..8c02bb7 100644
--- a/harp.py
+++ b/harp.py
@@ -85,7 +85,7 @@ def __init__(self, app):
         self.ui = Ui_MainWindow()
         self.ui.setupUi(self)
         self.app = app
-        self.HARP_VERSION = '2.0.5'
+        self.HARP_VERSION = '2.0.7'
 
         # Store app-specific data such as last directory browsed
         self.app_data = AppData()
diff --git a/harp.py~ b/harp.py~
index b347dac..45df362 100644
--- a/harp.py~
+++ b/harp.py~
@@ -85,7 +85,7 @@ class MainWindow(QtGui.QMainWindow):
         self.ui = Ui_MainWindow()
         self.ui.setupUi(self)
         self.app = app
-        self.HARP_VERSION = '2.0.3'
+        self.HARP_VERSION = '2.0.5'
 
         # Store app-specific data such as last directory browsed
         self.app_data = AppData()
diff --git a/imgprocessing/zproject.py b/imgprocessing/zproject.py
index 63848a4..5ce3e22 100644
--- a/imgprocessing/zproject.py
+++ b/imgprocessing/zproject.py
@@ -77,6 +77,7 @@ def run_onthisthread(self):
             print "performing z-projection on sparse file list"
 
             max_array = self.max_projection(sparse_filelist, imdims, dtype)
+            max_array = max_array.astype(np.uint8)
             imwriter = Imwriter(self.zprojection_output)
             imwriter.imwrite(max_array, self.zprojection_output)