1 files changed, 1 insertions, 1 deletions
diff --git a/src/SMAPI/Framework/ContentCore.cs b/src/SMAPI/Framework/ContentCore.cs
index 6e915f28..80fedd6c 100644
--- a/src/SMAPI/Framework/ContentCore.cs
+++ b/src/SMAPI/Framework/ContentCore.cs
@@ -379,7 +379,7 @@ namespace StardewModdingAPI.Framework
             {
                 foreach (var entry in this.ContentManagersByAssetKey)
                     entry.Value.Remove(shim);
-                this.InvalidateCache((key, type) => !this.ContentManagersByAssetKey[key].Any(), dispose: true);
+                this.InvalidateCache((key, type) => !this.ContentManagersByAssetKey.TryGetValue(key, out var managers) || !managers.Any(), dispose: true);
             });
         }