diff --git a/build.py b/build.py
index 913ddbc..9dd9c38 100644
--- a/build.py
+++ b/build.py
@@ -90,7 +90,7 @@ def build_cocoa(dev):
         os.mkdir(pydep_folder)
     shutil.copy(op.join(cocoa_project_path, 'dg_cocoa.py'), 'build')
     tocopy = [
-        'dupeguru/core', 'dupeguru/hscommon', 'cocoa/inter', 'cocoalib/cocoa', 'objp', 'send2trash', 'hsaudiotag',
+        'dupeguru/core', 'dupeguru/hscommon', 'cocoa/inter', 'cocoalib/cocoa', 'objp', 'send2trash', 'mutagen'
     ]
     copy_packages(tocopy, pydep_folder, create_links=dev)
     sys.path.insert(0, 'build')
diff --git a/cocoa/inter/app.py b/cocoa/inter/app.py
index 6bc3e4e..f2dfa02 100644
--- a/cocoa/inter/app.py
+++ b/cocoa/inter/app.py
@@ -31,7 +31,7 @@ class DupeGuru(DupeGuruBase):
 
     def _get_fileclasses(self):
         result = DupeGuruBase._get_fileclasses(self)
-        if self.app_mode == AppMode.Standard:
+        if self.app_mode == AppMode.STANDARD:
             result = [Bundle] + result
         return result
 
diff --git a/cocoalib/cocoa/inter.py b/cocoalib/cocoa/inter.py
index 01d7e77..a48c68a 100644
--- a/cocoalib/cocoa/inter.py
+++ b/cocoalib/cocoa/inter.py
@@ -181,7 +181,7 @@ class PyTable(PyGUIObject):
     
     #--- Cocoa --> Python
     def columns(self) -> pyref:
-        return self.model.columns
+        return self.model._columns
     
     def add(self):
         self.model.add()
diff --git a/dupeguru b/dupeguru
index bf7d720..47dbe80 160000
--- a/dupeguru
+++ b/dupeguru
@@ -1 +1 @@
-Subproject commit bf7d720126525557d45d4293076553372cc78d34
+Subproject commit 47dbe805bb563f3f4ffb90730fc8b1349448789e