diff --git a/miner/fsd_built.py b/miner/fsd_built.py
index f91cc8f..b815fa4 100644
--- a/miner/fsd_built.py
+++ b/miner/fsd_built.py
@@ -51,8 +51,8 @@ def get_data(self, container_name, language=None, verbose=False, **kwargs):
         except KeyError:
             self._container_not_found(container_name)
         else:
-            if os.name != 'nt' or struct.calcsize('P') * 8 != 64:
-                msg = 'need 64-bit python under Windows to execute loader'
+            if not self._platform_supported(os.name, sys.platform, struct.calcsize('P') * 8):
+                msg = 'need 64-bit Python on Windows or macOS to execute loader'
                 raise PlatformError(msg)
             loader_filename = loader_respath.split('/')[-1]
             loader_info = self._resbrowser.get_file_info(loader_respath)
@@ -87,7 +87,11 @@ def _contname_fsdfiles_map(self):
         loaders = {}
         datas = {}
         for resource_path in self._resbrowser.respath_iter():
-            m = re.match(r'^app:/bin64/(\w+/)*(?P<name>\w+)Loader.pyd$', resource_path, flags=re.UNICODE)
+            m = re.match(
+                r'^app:/(?:.+/)?bin64/(\w+/)*(?P<name>\w+)Loader\.(?:pyd|so)$',
+                resource_path,
+                flags=re.UNICODE,
+            )
             if m:
                 loaders[m.group('name').lower()] = resource_path
                 continue
@@ -124,6 +128,12 @@ def _compare_files(self, file1_path, file2_path):
         with open(file1_path, 'rb') as f1, open(file2_path, 'rb') as f2:
             return f1.read() == f2.read()
 
+    @staticmethod
+    def _platform_supported(os_name, sys_platform, pointer_bits):
+        if pointer_bits != 64:
+            return False
+        return os_name == 'nt' or sys_platform == 'darwin'
+
 
 class PlatformError(Exception):
     """Raised when FSD binary miner is used on incorrect platform."""
diff --git a/miner/metadata.py b/miner/metadata.py
index 7dbd2f7..ba2bca1 100644
--- a/miner/metadata.py
+++ b/miner/metadata.py
@@ -44,7 +44,9 @@ def get_data(self, container_name, **kwargs):
         if container_name != self._container_name:
             self._container_not_found(container_name)
         else:
-            file_info = self._resbrowser.get_file_info('app:/start.ini')
+            file_info = self._resbrowser.get_file_info(
+                self._resbrowser.find_resource_path('start.ini', prefix='app:/')
+            )
             field_names = ('field_name', 'field_value')
             container_data = []
             # Read client version
diff --git a/tests/test_frontier_resource_paths.py b/tests/test_frontier_resource_paths.py
new file mode 100644
index 0000000..62b3405
--- /dev/null
+++ b/tests/test_frontier_resource_paths.py
@@ -0,0 +1,177 @@
+import configparser
+import importlib.util
+import os
+import sys
+import tempfile
+import types
+import unittest
+
+
+ROOT = os.path.dirname(os.path.dirname(__file__))
+
+
+class cachedproperty(object):
+    def __init__(self, method):
+        self.__method = method
+
+    def __get__(self, instance, owner):
+        if instance is None:
+            return self
+        value = self.__method(instance)
+        setattr(instance, self.__method.__name__, value)
+        return value
+
+
+def load_module(module_name, relpath, extra_modules=None):
+    extra_modules = extra_modules or {}
+    saved = {}
+    for name, module in extra_modules.items():
+        saved[name] = sys.modules.get(name)
+        sys.modules[name] = module
+    try:
+        spec = importlib.util.spec_from_file_location(
+            module_name,
+            os.path.join(ROOT, relpath),
+        )
+        module = importlib.util.module_from_spec(spec)
+        spec.loader.exec_module(module)
+        return module
+    finally:
+        for name, module in extra_modules.items():
+            if saved[name] is None:
+                del sys.modules[name]
+            else:
+                sys.modules[name] = saved[name]
+
+
+class FrontierPathFixTests(unittest.TestCase):
+    def test_resource_browser_supports_nested_frontier_paths(self):
+        util_module = types.ModuleType('util')
+        util_module.cachedproperty = cachedproperty
+        resource_browser = load_module(
+            'test_resource_browser',
+            'util/resource_browser.py',
+            {'util': util_module},
+        )
+
+        with tempfile.TemporaryDirectory() as eve_dir:
+            nested_index = os.path.join(
+                eve_dir,
+                'stillness',
+                'EVE.app',
+                'Contents',
+                'Resources',
+                'build',
+            )
+            os.makedirs(nested_index)
+            expected = os.path.join(nested_index, 'resfileindex.txt')
+            with open(expected, 'w'):
+                pass
+
+            browser = resource_browser.ResourceBrowser(eve_dir, 'stillness')
+            browser._resource_index = {
+                'app:/EVE.app/Contents/Resources/build/start.ini': None,
+            }
+
+            self.assertEqual(browser._resolve_resfileindex_path(), expected)
+            self.assertEqual(
+                browser.find_resource_path('start.ini', prefix='app:/'),
+                'app:/EVE.app/Contents/Resources/build/start.ini',
+            )
+
+    def test_metadata_uses_suffix_lookup_for_start_ini(self):
+        configparser_module = types.ModuleType('ConfigParser')
+        configparser_module.ConfigParser = configparser.ConfigParser
+        miner_base_module = types.ModuleType('miner.base')
+
+        class BaseMiner(object):
+            def _container_not_found(self, container_name):
+                raise AssertionError(container_name)
+
+        miner_base_module.BaseMiner = BaseMiner
+
+        metadata_module = load_module(
+            'miner.metadata_test',
+            'miner/metadata.py',
+            {
+                'ConfigParser': configparser_module,
+                'miner.base': miner_base_module,
+            },
+        )
+
+        class Browser(object):
+            def __init__(self):
+                self.lookup_calls = []
+                self.info_calls = []
+
+            def find_resource_path(self, suffix, prefix=None):
+                self.lookup_calls.append((suffix, prefix))
+                return 'app:/EVE.app/Contents/Resources/build/start.ini'
+
+            def get_file_info(self, resource_path):
+                self.info_calls.append(resource_path)
+                return types.SimpleNamespace(file_abspath=self.start_ini_path)
+
+        with tempfile.TemporaryDirectory() as temp_dir:
+            start_ini_path = os.path.join(temp_dir, 'start.ini')
+            with open(start_ini_path, 'w') as start_ini:
+                start_ini.write('[main]\nbuild = 12345\n')
+
+            browser = Browser()
+            browser.start_ini_path = start_ini_path
+            miner = metadata_module.MetadataMiner(browser)
+            miner.get_data('metadata')
+
+            self.assertEqual(browser.lookup_calls, [('start.ini', 'app:/')])
+            self.assertEqual(
+                browser.info_calls,
+                ['app:/EVE.app/Contents/Resources/build/start.ini'],
+            )
+
+    def test_fsd_built_accepts_macos_loader_paths(self):
+        util_module = types.ModuleType('util')
+        util_module.cachedproperty = cachedproperty
+
+        class EveNormalizer(object):
+            def run(self, fsd_data, loader_module=None):
+                return fsd_data
+
+        util_module.EveNormalizer = EveNormalizer
+        miner_base_module = types.ModuleType('miner.base')
+
+        class BaseMiner(object):
+            def _container_not_found(self, container_name):
+                raise AssertionError(container_name)
+
+        miner_base_module.BaseMiner = BaseMiner
+
+        fsd_built_module = load_module(
+            'miner.fsd_built_test',
+            'miner/fsd_built.py',
+            {
+                'util': util_module,
+                'miner.base': miner_base_module,
+            },
+        )
+
+        class Browser(object):
+            def respath_iter(self):
+                return iter((
+                    'app:/EVE.app/Contents/Resources/build/bin64/foo/ExampleLoader.so',
+                    'res:/staticdata/foo/Example.fsdbinary',
+                ))
+
+        miner = fsd_built_module.FsdBuiltMiner(Browser(), translator=None)
+
+        self.assertTrue(fsd_built_module.FsdBuiltMiner._platform_supported('posix', 'darwin', 64))
+        self.assertEqual(
+            miner._contname_fsdfiles_map['example'],
+            (
+                'app:/EVE.app/Contents/Resources/build/bin64/foo/ExampleLoader.so',
+                'res:/staticdata/foo/Example.fsdbinary',
+            ),
+        )
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/util/resource_browser.py b/util/resource_browser.py
index 1ef1922..a598fed 100644
--- a/util/resource_browser.py
+++ b/util/resource_browser.py
@@ -71,6 +71,15 @@ def get_file_info(self, resource_path):
         self.__verify_data(data=data, file_info=file_info)
         return file_info
 
+    def find_resource_path(self, suffix, prefix=None):
+        target_suffix = '/{}'.format(suffix.lstrip('/'))
+        for resource_path in self._resource_index:
+            if prefix is not None and not resource_path.startswith(prefix):
+                continue
+            if resource_path.endswith(target_suffix):
+                return resource_path
+        raise KeyError(suffix)
+
     def __verify_data(self, data, file_info):
         if len(data) != file_info.file_size:
             raise FileIntegrityError(u'file size mismatch when reading {}'.format(file_info.resource_path))
@@ -82,7 +91,7 @@ def __verify_data(self, data, file_info):
     @cachedproperty
     def _resource_index(self):
         index = {}
-        res_index_path = os.path.join(self._eve_path, self._server_alias, 'resfileindex.txt')
+        res_index_path = self._resolve_resfileindex_path()
         with open(res_index_path) as f:
             for resource_path, file_relpath, file_hash, file_size, compressed_size in csv.reader(f):
                 index[resource_path] = FileInfo(
@@ -104,6 +113,25 @@ def _resource_index(self):
                     compressed_size=int(compressed_size))
         return index
 
+    def _resolve_resfileindex_path(self):
+        legacy_path = os.path.join(self._eve_path, self._server_alias, 'resfileindex.txt')
+        if os.path.exists(legacy_path):
+            return legacy_path
+
+        frontier_path = os.path.join(
+            self._eve_path,
+            self._server_alias,
+            'EVE.app',
+            'Contents',
+            'Resources',
+            'build',
+            'resfileindex.txt',
+        )
+        if os.path.exists(frontier_path):
+            return frontier_path
+
+        return legacy_path
+
 
 class FileIntegrityError(Exception):
     pass