simplesynth 1.1 does not run on MacOS 13.4

[GeorgeCo]

Hi

simplesynth 1.1 does not run on MacOS 13.4. When I double click the app I get a message: “SimpleSynth.app” needs to be updated.

Thanks
George

[BillyV2018]

Neither works on Sonoma 14.2, obviously.
Is a port doable?
Thanks, Bill

[osbertngok]

This is what I have changed to get it working on OSX 13.

diff --git a/SimpleSynth.xcodeproj/project.pbxproj b/SimpleSynth.xcodeproj/project.pbxproj
index ba53373..cc9975e 100644
--- a/SimpleSynth.xcodeproj/project.pbxproj
+++ b/SimpleSynth.xcodeproj/project.pbxproj
@@ -3,7 +3,7 @@
        archiveVersion = 1;
        classes = {
        };
-       objectVersion = 45;
+       objectVersion = 54;
        objects = {
 
 /* Begin PBXBuildFile section */
@@ -387,7 +387,7 @@
                                GCC_OPTIMIZATION_LEVEL = 0;
                                INFOPLIST_FILE = Info.plist;
                                INSTALL_PATH = "$(HOME)/Applications";
-                               MACOSX_DEPLOYMENT_TARGET = 10.10;
+                               MACOSX_DEPLOYMENT_TARGET = 13.0;
                                MARKETING_VERSION = 1.2;
                                PRODUCT_NAME = SimpleSynth;
                                PROVISIONING_PROFILE_SPECIFIER = "";
@@ -409,7 +409,7 @@
                                GCC_MODEL_TUNING = G5;
                                INFOPLIST_FILE = Info.plist;
                                INSTALL_PATH = "$(HOME)/Applications";
-                               MACOSX_DEPLOYMENT_TARGET = 10.10;
+                               MACOSX_DEPLOYMENT_TARGET = 13.0;
                                MARKETING_VERSION = 1.2;
                                PRODUCT_NAME = SimpleSynth;
                                PROVISIONING_PROFILE_SPECIFIER = "";