diff --git a/ConfusedPolarBear.Plugin.IntroSkipper/Configuration/configPage.html b/ConfusedPolarBear.Plugin.IntroSkipper/Configuration/configPage.html
index b63d77d..9ecdfdc 100644
--- a/ConfusedPolarBear.Plugin.IntroSkipper/Configuration/configPage.html
+++ b/ConfusedPolarBear.Plugin.IntroSkipper/Configuration/configPage.html
@@ -850,12 +850,16 @@
 
                 switch (e.key) {
                     case "ArrowDown":
-                        // if the control key is pressed, shift LHS by 10s. Otherwise, shift by 1.
-                        offsetDelta = e.ctrlKey ? 10 / 0.128 : 1;
+                        if (timestampError.value != "") {
+                            // if the control key is pressed, shift LHS by 10s. Otherwise, shift by 1.
+                            offsetDelta = e.ctrlKey ? 10 / 0.128 : 1;
+                        }
                         break;
 
                     case "ArrowUp":
-                        offsetDelta = e.ctrlKey ? -10 / 0.128 : -1;
+                        if (timestampError.value != "") {
+                            offsetDelta = e.ctrlKey ? -10 / 0.128 : -1;
+                        }
                         break;
 
                     case "ArrowRight":
diff --git a/ConfusedPolarBear.Plugin.IntroSkipper/FFmpegWrapper.cs b/ConfusedPolarBear.Plugin.IntroSkipper/FFmpegWrapper.cs
index 95779e6..26a9f75 100644
--- a/ConfusedPolarBear.Plugin.IntroSkipper/FFmpegWrapper.cs
+++ b/ConfusedPolarBear.Plugin.IntroSkipper/FFmpegWrapper.cs
@@ -605,6 +605,25 @@ public static class FFmpegWrapper
             Encoding.UTF8).ConfigureAwait(false);
     }
 
+    /// <summary>
+    /// Remove a cached episode fingerprint from disk.
+    /// </summary>
+    /// <param name="episodeId">Episode to remove from cache.</param>
+    /// <param name="mode">Analysis mode.</param>
+    public static void DeleteEpisodeCache(string episodeId, AnalysisMode mode)
+    {
+        var cachePath = Path.Join(
+            Plugin.Instance!.FingerprintCachePath,
+            episodeId);
+
+        if (mode == AnalysisMode.Credits)
+        {
+            cachePath += "-credits";
+        }
+
+        File.Delete(cachePath);
+    }
+
     /// <summary>
     /// Determines the path an episode should be cached at.
     /// This function was created before the unified caching mechanism was introduced (in v0.1.7).