diff --git a/cr/externals/cr.boardin.mxo/Contents/Info.plist b/cr/externals/cr.boardin.mxo/Contents/Info.plist
index e71d1e1cda03f126f0e37a3ad3830f1c2bf6dc4e..76526305119f6e4f03e8f9185c9092c1d3e91921 100644
--- a/cr/externals/cr.boardin.mxo/Contents/Info.plist
+++ b/cr/externals/cr.boardin.mxo/Contents/Info.plist
@@ -3,7 +3,7 @@
 <plist version="1.0">
 <dict>
 	<key>BuildMachineOSBuild</key>
-	<string>16G1212</string>
+	<string>18D42</string>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>English</string>
 	<key>CFBundleExecutable</key>
@@ -29,16 +29,16 @@
 	<key>DTCompiler</key>
 	<string>com.apple.compilers.llvm.clang.1_0</string>
 	<key>DTPlatformBuild</key>
-	<string>8E3004b</string>
+	<string>10B61</string>
 	<key>DTPlatformVersion</key>
 	<string>GM</string>
 	<key>DTSDKBuild</key>
-	<string>16E185</string>
+	<string>18B71</string>
 	<key>DTSDKName</key>
-	<string>macosx10.12</string>
+	<string>macosx10.14</string>
 	<key>DTXcode</key>
-	<string>0833</string>
+	<string>1010</string>
 	<key>DTXcodeBuild</key>
-	<string>8E3004b</string>
+	<string>10B61</string>
 </dict>
 </plist>
diff --git a/cr/externals/cr.boardin.mxo/Contents/MacOS/cr.boardin b/cr/externals/cr.boardin.mxo/Contents/MacOS/cr.boardin
index 931b1695d8cea3041e0aea70ab92d91f15f03d79..b3d7bcac656b83ce62ef366f53964ef5cd48cf7b 100755
Binary files a/cr/externals/cr.boardin.mxo/Contents/MacOS/cr.boardin and b/cr/externals/cr.boardin.mxo/Contents/MacOS/cr.boardin differ
diff --git a/source/FirmataClient/serial.c b/source/FirmataClient/serial.c
index 7f9967e72f7ac991df95bfb77b9731afb42fdb50..8745c90555a81f2e22beb2437898aa0f390dafbb 100755
--- a/source/FirmataClient/serial.c
+++ b/source/FirmataClient/serial.c
@@ -94,7 +94,6 @@ int serial_portlist(char **list, int max_ports)
     numPorts += macos_ports(&serialPortIterator, list, max_ports, numPorts);
     IOObjectRelease(serialPortIterator);
 
-    /*
     // but it might be considered a "rs232 port", so repeat this
     // search for rs232 ports
     classesToMatch = IOServiceMatching(kIOSerialBSDServiceValue);
@@ -105,8 +104,8 @@ int serial_portlist(char **list, int max_ports)
                                      &serialPortIterator) != KERN_SUCCESS) return 0;
     numPorts += macos_ports(&serialPortIterator, list, max_ports, numPorts);
     IOObjectRelease(serialPortIterator);
-    */
     
+    printf("serial_portlist: %d\n", numPorts);
     return numPorts;
 }
 
diff --git a/source/cr.boardin/cr.boardin.c b/source/cr.boardin/cr.boardin.c
index 71723acd2fd9af899c291de0abc2fac05206c220..bd18173bbb1ecf87af486cd5b7e1dcaf7bc59c29 100755
--- a/source/cr.boardin/cr.boardin.c
+++ b/source/cr.boardin/cr.boardin.c
@@ -721,8 +721,12 @@ void boardin_printAvailPorts(t_boardin *x) {
     
     int num_ports = serial_portlist(ports_avail, MAX_PORTS);
     
-    for(int i=0; i<num_ports; ++i) {
-        object_post((t_object *)x, "port %c: %s", i+'a', ports_avail[i]);
+    if (num_ports == 0) {
+        object_post((t_object *)x, "no ports found");
+    } else {
+        for (int i=0; i<num_ports; ++i) {
+            object_post((t_object *)x, "port %c: %s", i+'a', ports_avail[i]);
+        }
     }
 }
 
diff --git a/source/cr.boardin/cr.boardin.xcodeproj/project.pbxproj b/source/cr.boardin/cr.boardin.xcodeproj/project.pbxproj
index c1849b11a89e87749713a0e49623b507051e26af..9d682b4d7e6fc0006884b9303131ed2a48ee064c 100755
--- a/source/cr.boardin/cr.boardin.xcodeproj/project.pbxproj
+++ b/source/cr.boardin/cr.boardin.xcodeproj/project.pbxproj
@@ -189,6 +189,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 22CF10220EE984600054F513 /* maxmspsdk.xcconfig */;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD)";
 				COPY_PHASE_STRIP = NO;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				OTHER_LDFLAGS = "$(C74_SYM_LINKER_FLAGS)";
@@ -200,6 +201,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 22CF10220EE984600054F513 /* maxmspsdk.xcconfig */;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD)";
 				COPY_PHASE_STRIP = YES;
 				OTHER_LDFLAGS = "$(C74_SYM_LINKER_FLAGS)";
 				PRODUCT_NAME = cr.boardin;
diff --git a/source/cr.boardout/cr.boardout.c b/source/cr.boardout/cr.boardout.c
index 33df304deef1d261ff5936c5bde46a8d230918fb..137b39c5ad0390603dd9aa1258d4ce9dde7e8488 100755
--- a/source/cr.boardout/cr.boardout.c
+++ b/source/cr.boardout/cr.boardout.c
@@ -830,8 +830,12 @@ void boardout_printAvailPorts(t_boardout *x) {
     
     int num_ports = serial_portlist(ports_avail, MAX_PORTS);
     
-    for(int i=0; i<num_ports; ++i) {
-        object_post((t_object *)x, "port %c: %s", i+'a', ports_avail[i]);
+    if (num_ports == 0) {
+        object_post((t_object *)x, "no ports found");
+    } else {
+        for (int i=0; i<num_ports; ++i) {
+            object_post((t_object *)x, "port %c: %s", i+'a', ports_avail[i]);
+        }
     }
 }
 
diff --git a/source/cr.boardout/cr.boardout.xcodeproj/project.pbxproj b/source/cr.boardout/cr.boardout.xcodeproj/project.pbxproj
index a304117f4ecf57583e4ec47ec43f09a26fe6ff0a..10f68f11851d0d366c2fc1984d2cbe0cf112e388 100755
--- a/source/cr.boardout/cr.boardout.xcodeproj/project.pbxproj
+++ b/source/cr.boardout/cr.boardout.xcodeproj/project.pbxproj
@@ -189,6 +189,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 22CF10220EE984600054F513 /* maxmspsdk.xcconfig */;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD)";
 				COPY_PHASE_STRIP = NO;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				OTHER_LDFLAGS = "$(C74_SYM_LINKER_FLAGS)";
@@ -201,6 +202,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 22CF10220EE984600054F513 /* maxmspsdk.xcconfig */;
 			buildSettings = {
+				ARCHS = "$(ARCHS_STANDARD)";
 				COPY_PHASE_STRIP = YES;
 				OTHER_LDFLAGS = "$(C74_SYM_LINKER_FLAGS)";
 				"OTHER_LDFLAGS[arch=*]" = "$(C74_SYM_LINKER_FLAGS)";