diff --git a/src/m64py/frontend/dialogs.py b/src/m64py/frontend/dialogs.py
index f4b2850..4e3d124 100644
--- a/src/m64py/frontend/dialogs.py
+++ b/src/m64py/frontend/dialogs.py
@@ -27,10 +27,13 @@ class AboutDialog(QDialog, Ui_AboutDialog):
     def __init__(self, parent):
         QDialog.__init__(self, parent)
         self.setupUi(self)
+        if parent.worker.m64p.core_version != "Unknown":
+            version = version_split(parent.worker.m64p.core_version)
+        else:
+            version = "Unknown"
         text = self.labelAbout.text()
         text = text.replace("FRONTEND_VERSION", FRONTEND_VERSION)
-        text = text.replace("CORE_VERSION",
-                version_split(parent.worker.m64p.core_version))
+        text = text.replace("CORE_VERSION", version)
         self.labelAbout.setText(text)
         self.show()
 
diff --git a/src/m64py/frontend/keymap.py b/src/m64py/frontend/keymap.py
index 63a4fc9..383696e 100644
--- a/src/m64py/frontend/keymap.py
+++ b/src/m64py/frontend/keymap.py
@@ -16,8 +16,7 @@
 
 from PyQt4.QtCore import Qt
 
-from m64py.SDL.constants import *
-from m64py.SDL2.scancode import *
+from m64py.frontend.keycodes import *
 
 QT2SDL = {}
 QT2SDL2 = {}
diff --git a/src/m64py/frontend/romlist.py b/src/m64py/frontend/romlist.py
index a5fdb04..90e6c86 100644
--- a/src/m64py/frontend/romlist.py
+++ b/src/m64py/frontend/romlist.py
@@ -144,8 +144,8 @@ class ROMList(QMainWindow, Ui_ROMList):
 
     def refresh_items(self):
         """Refreshes available ROMs list"""
-        path_roms = self.qset.value("Paths/ROM")
-        if not path_roms:
+        path_roms = str(self.qset.value("Paths/ROM"))
+        if not path_roms or path_roms == "None":
             self.parent.emit(SIGNAL(
                 "info_dialog(PyQt_PyObject)"),
                 "ROMs directory not found.")