diff --git a/indra/cmake/Variables.cmake b/indra/cmake/Variables.cmake
index 2b54cd41552485e882411ad79608b2b8b4933057..a5770c5528dd38ed50af1c45ae1e109f18788af7 100644
--- a/indra/cmake/Variables.cmake
+++ b/indra/cmake/Variables.cmake
@@ -186,12 +186,17 @@ if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
   list(GET LL_BUILD_LIST "${sysroot_idx}" CMAKE_OSX_SYSROOT)
   message(STATUS "CMAKE_OSX_SYSROOT = '${CMAKE_OSX_SYSROOT}'")
 
-  set(XCODE_VERSION 7.0)
-
   set(CMAKE_XCODE_ATTRIBUTE_GCC_VERSION "com.apple.compilers.llvm.clang.1_0")
   set(CMAKE_XCODE_ATTRIBUTE_GCC_STRICT_ALIASING NO)
   set(CMAKE_XCODE_ATTRIBUTE_GCC_FAST_MATH NO)
   set(CMAKE_XCODE_ATTRIBUTE_CLANG_X86_VECTOR_INSTRUCTIONS ssse3)
+  # we must hard code this to off for now.  xcode's built in signing does not
+  # handle embedded app bundles such as CEF and others. Any signing for local
+  # development must be done after the build as we do in viewer_manifest.py for
+  # released builds
+  # https://stackoverflow.com/a/54296008
+  # "-" represents "Sign to Run Locally" and empty string represents "Do Not Sign"
+  set(CMAKE_XCODE_ATTRIBUTE_CODE_SIGN_IDENTITY "")
 
   set(CMAKE_OSX_ARCHITECTURES "${ARCH}")
   string(REPLACE "i686"  "i386"   CMAKE_OSX_ARCHITECTURES "${CMAKE_OSX_ARCHITECTURES}")
diff --git a/indra/llwindow/llopenglview-objc.mm b/indra/llwindow/llopenglview-objc.mm
index d93c1b5b36db3127dc7e888ada49b617832b7f39..5b9dce02c4bae01ff49dd2f0e13034d51f31264e 100644
--- a/indra/llwindow/llopenglview-objc.mm
+++ b/indra/llwindow/llopenglview-objc.mm
@@ -816,7 +816,7 @@ attributedStringInfo getSegments(NSAttributedString *str)
     [super setMarkedText:aString selectedRange:selectedRange replacementRange:replacementRange];
     if ([aString length] == 0)      // this means Input Widow becomes empty
     {
-        [_window orderOut:_window];     // Close this to avoid empty Input Window
+        [self.window orderOut:self.window];     // Close this to avoid empty Input Window
     }
 }
 
@@ -840,7 +840,7 @@ attributedStringInfo getSegments(NSAttributedString *str)
         (mKeyPressed >= 0xF700 && mKeyPressed <= 0xF8FF))
     {
         // this is case a) of above comment
-        [_window orderOut:_window];     // to avoid empty Input Window
+        [self.window orderOut:self.window];     // to avoid empty Input Window
     }
 }
 
diff --git a/indra/newview/CMakeLists.txt b/indra/newview/CMakeLists.txt
index 95a916d7cb05716067300a8bac2b45f0f51aef6f..6089162190721a347f397db9df5d2ddc3476e34e 100644
--- a/indra/newview/CMakeLists.txt
+++ b/indra/newview/CMakeLists.txt
@@ -1381,8 +1381,12 @@ if (DARWIN)
     PROPERTIES
     COMPILE_DEFINITIONS "${VIEWER_CHANNEL_VERSION_DEFINES}"
     # BugsplatMac is a module, imported with @import. That language feature
-    # demands these switches.
-    COMPILE_FLAGS "-fmodules -fcxx-modules"
+    # demands these -f switches.
+    # Xcode 10.2 requires that Objective-C++ headers declare nullability of
+    # pointer variables. As of 2019-06-26, the BugsplatMac version we're using
+    # does not yet do so in its own header files. This -W flag prevents fatal
+    # warnings.
+    COMPILE_FLAGS "-fmodules -fcxx-modules -Wno-nullability-completeness"
     )
 
   find_library(AGL_LIBRARY AGL)
diff --git a/indra/newview/llimprocessing.cpp b/indra/newview/llimprocessing.cpp
index 42043a03f2b726e5bd8c92c6a6d71b540bdf7733..24f40c8182bcfab37d4a19e0973d64d340d86780 100644
--- a/indra/newview/llimprocessing.cpp
+++ b/indra/newview/llimprocessing.cpp
@@ -855,39 +855,18 @@ void LLIMProcessing::processNewMessage(LLUUID from_id,
             }
             else // IM_TASK_INVENTORY_OFFERED
             {
-                if (offline == IM_OFFLINE && session_id.isNull() && aux_id.notNull() && binary_bucket_size > sizeof(S8)* 5)
-                {
-                    // cap received offline message
-                    std::string str_bucket = ll_safe_string((char*)binary_bucket, binary_bucket_size);
-                    typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
-                    boost::char_separator<char> sep("|", "", boost::keep_empty_tokens);
-                    tokenizer tokens(str_bucket, sep);
-                    tokenizer::iterator iter = tokens.begin();
-
-                    info->mType = (LLAssetType::EType)(atoi((*(iter++)).c_str()));
-                    // Note There is more elements in 'tokens' ...
-
-                    info->mObjectID = LLUUID::null;
-                    info->mFromObject = TRUE;
-                }
-                else
-                {
-                    if (sizeof(S8) != binary_bucket_size)
-                    {
-                        LL_WARNS("Messaging") << "Malformed inventory offer from object" << LL_ENDL;
-                        delete info;
-                        break;
-                    }
-                    info->mType = (LLAssetType::EType) binary_bucket[0];
-                    info->mObjectID = LLUUID::null;
-                    info->mFromObject = TRUE;
-                }
+                info->mType = (LLAssetType::EType) binary_bucket[0];
+                info->mObjectID = LLUUID::null;
+                info->mFromObject = TRUE;
             }
 
+            // In the case of an offline message, the transaction id will be in aux_id and th session_id will be null
+            // (conversely when online the transaction id is passed as session_id)
+            info->mTransactionID = session_id.isNull() ? aux_id : session_id;
+
             info->mIM = dialog;
             info->mFromID = from_id;
             info->mFromGroup = from_group;
-            info->mTransactionID = session_id;
             info->mFolderID = gInventory.findCategoryUUIDForType(LLFolderType::assetTypeToFolderType(info->mType));
 
             info->mFromName = name;