diff --git a/src/api/api_server.py b/src/api/api_server.py
index 900bf05..28494c2 100755
--- a/src/api/api_server.py
+++ b/src/api/api_server.py
@@ -423,10 +423,12 @@ def renderer_info():
         # Get all installed versions of engine
         installed_versions = EngineManager.all_versions_for_engine(engine.name())
         if installed_versions:
-            install_path = installed_versions[0]['path']
+            # fixme: using system versions only because downloaded versions may have permissions issues
+            system_installed_versions = [x for x in installed_versions if x['type'] == 'system']
+            install_path = system_installed_versions[0]['path'] if system_installed_versions else installed_versions[0]['path']
             renderer_data[engine.name()] = {'is_available': RenderQueue.is_available_for_job(engine.name()),
                                             'versions': installed_versions,
-                                            'supported_extensions': engine.supported_extensions,
+                                            'supported_extensions': engine.supported_extensions(),
                                             'supported_export_formats': engine(install_path).get_output_formats()}
     return renderer_data
 
diff --git a/src/engines/core/base_worker.py b/src/engines/core/base_worker.py
index 44eebfa..bfdce4c 100644
--- a/src/engines/core/base_worker.py
+++ b/src/engines/core/base_worker.py
@@ -47,7 +47,7 @@ class BaseRenderWorker(Base):
                  name=None):
 
         if not ignore_extensions:
-            if not any(ext in input_path for ext in self.engine.supported_extensions):
+            if not any(ext in input_path for ext in self.engine.supported_extensions()):
                 err_meg = f'Cannot find valid project with supported file extension for {self.engine.name()} renderer'
                 logger.error(err_meg)
                 raise ValueError(err_meg)