Ensure the VSIX Python script aborts if the ASF project generator is missing.

LUFA/StudioIntegration/generate_caches.py

@@ -10,11 +10,26 @@ import sys
 import os
 sys.path.append("ProjectGenerator")
 
-try:
-	from asf_avrstudio5_interface import PythonFacade
-except ImportError:
-	print "The ASF project generator is missing."
 
-p = PythonFacade(os.path.abspath(__file__))
-p.check_extension_database_sanity(sys.argv[1])
-p.generate_extension_cache_files(sys.argv[1])
+def main():
+	try:
+		from asf_avrstudio5_interface import PythonFacade
+	except ImportError:
+		print "The ASF project generator is missing."
+		sys.exit()
+
+	p = PythonFacade(os.path.abspath(__file__))
+
+	print "[Project Generator] Checking database sanity..."
+	sys.stdout.flush()
+	p.check_extension_database_sanity(sys.argv[1])
+
+	print "[Project Generator] Building cache files..."
+	sys.stdout.flush()
+	p.generate_extension_cache_files(sys.argv[1])
+
+	print "[Project Generator] Cache files created."
+
+
+if __name__ == "__main__":
+    sys.exit(main())