diff --git a/tagstudio/src/core/enums.py b/tagstudio/src/core/enums.py
index a0c626bf..d61fe5aa 100644
--- a/tagstudio/src/core/enums.py
+++ b/tagstudio/src/core/enums.py
@@ -15,3 +15,5 @@ class Theme(str, enum.Enum):
     COLOR_BG = "#65000000"
     COLOR_HOVER = "#65AAAAAA"
     COLOR_PRESSED = "#65EEEEEE"
+    COLOR_DISABLED = "#65F39CAA"
+    COLOR_DISABLED_BG = "#65440D12"
diff --git a/tagstudio/src/qt/ts_qt.py b/tagstudio/src/qt/ts_qt.py
index a4d8f2f2..684e3867 100644
--- a/tagstudio/src/qt/ts_qt.py
+++ b/tagstudio/src/qt/ts_qt.py
@@ -525,6 +525,14 @@ class QtDriver(QObject):
         elif self.settings.value(SettingItems.START_LOAD_LAST, True, type=bool):
             lib = self.settings.value(SettingItems.LAST_LIBRARY)
 
+            # TODO: Remove this check if the library is no longer saved with files
+            if lib and not (Path(lib) / TS_FOLDER_NAME).exists():
+                logging.error(
+                    f"[QT DRIVER] {TS_FOLDER_NAME} folder in {lib} does not exist."
+                )
+                self.settings.setValue(SettingItems.LAST_LIBRARY, "")
+                lib = None
+
         if lib:
             self.splash.showMessage(
                 f'Opening Library "{lib}"...',
diff --git a/tagstudio/src/qt/widgets/preview_panel.py b/tagstudio/src/qt/widgets/preview_panel.py
index 876558ac..a595aa8c 100644
--- a/tagstudio/src/qt/widgets/preview_panel.py
+++ b/tagstudio/src/qt/widgets/preview_panel.py
@@ -30,7 +30,7 @@ from humanfriendly import format_size
 
 from src.core.enums import SettingItems, Theme
 from src.core.library import Entry, ItemType, Library
-from src.core.constants import VIDEO_TYPES, IMAGE_TYPES, RAW_IMAGE_TYPES
+from src.core.constants import VIDEO_TYPES, IMAGE_TYPES, RAW_IMAGE_TYPES, TS_FOLDER_NAME
 from src.qt.helpers.file_opener import FileOpenerLabel, FileOpenerHelper, open_file
 from src.qt.modals.add_field import AddFieldModal
 from src.qt.widgets.thumb_renderer import ThumbRenderer
@@ -298,6 +298,7 @@ class PreviewPanel(QWidget):
                     "}"
                     f"QPushButton::hover{{background-color:{Theme.COLOR_HOVER.value};}}"
                     f"QPushButton::pressed{{background-color:{Theme.COLOR_PRESSED.value};}}"
+                    f"QPushButton::disabled{{background-color:{Theme.COLOR_DISABLED_BG.value};}}"
                 )
             )
             btn.setCursor(Qt.CursorShape.PointingHandCursor)
@@ -306,6 +307,11 @@ class PreviewPanel(QWidget):
             button = QPushButton(text=cut_val)
             button.setObjectName(f"path{item_key}")
 
+            lib = Path(full_val)
+            if not lib.exists() or not (lib / TS_FOLDER_NAME).exists():
+                button.setDisabled(True)
+                button.setToolTip("Location is missing")
+
             def open_library_button_clicked(path):
                 return lambda: self.driver.open_library(Path(path))