diff --git a/Pocket Poster.xcodeproj/project.pbxproj b/Pocket Poster.xcodeproj/project.pbxproj
index 23614c3..5c9db5d 100644
--- a/Pocket Poster.xcodeproj/project.pbxproj	
+++ b/Pocket Poster.xcodeproj/project.pbxproj	
@@ -261,7 +261,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 10;
+				CURRENT_PROJECT_VERSION = 0;
 				DEVELOPMENT_ASSET_PATHS = "\"Pocket Poster/Preview Content\"";
 				DEVELOPMENT_TEAM = 2P4CP47H76;
 				ENABLE_PREVIEWS = YES;
@@ -293,7 +293,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 10;
+				CURRENT_PROJECT_VERSION = 0;
 				DEVELOPMENT_ASSET_PATHS = "\"Pocket Poster/Preview Content\"";
 				DEVELOPMENT_TEAM = 2P4CP47H76;
 				ENABLE_PREVIEWS = YES;
diff --git a/Pocket Poster/Pocket_PosterApp.swift b/Pocket Poster/Pocket_PosterApp.swift
index 14e3475..1e2c098 100644
--- a/Pocket Poster/Pocket_PosterApp.swift	
+++ b/Pocket Poster/Pocket_PosterApp.swift	
@@ -40,7 +40,10 @@ struct Pocket_PosterApp: App {
             .onOpenURL(perform: { url in
                 // Download URL
                 if url.absoluteString.starts(with: "pocketposter://download") {
-                    if selectedTendies.count >= PosterBoardManager.MaxTendies {
+                    // prohibit to only tendies files
+                    if !url.absoluteString.hasSuffix(".tendies") {
+                        UIApplication.shared.alert(body: "Only .tendies files can be downloaded!")
+                    } else if selectedTendies.count >= PosterBoardManager.MaxTendies {
                         UIApplication.shared.alert(title: "Max Tendies Reached", body: "You can only apply \(PosterBoardManager.MaxTendies) descriptors.")
                     } else {
                         downloadURL = url.absoluteString.replacingOccurrences(of: "pocketposter://download?url=", with: "")