01:18:46.457 Preparing to launch minecraft client for 1.7.3
01:18:46.460 Prepared asset index
01:18:47.413 Have 624 total files to check or download
01:18:47.522 Waiting for 624 futures
01:18:47.916 Checking installations.
01:18:47.917 Minecraft client 1.7.3 is ready to start.
01:18:47.918 Starting!
01:18:47.918 Nothing to download!
01:18:47.918 Downloading Java Runtime jre-legacy:8u51
01:18:48.689 Extracting 4 files!
01:18:48.872 Using default game log configuration client-1.7.xml (outputs XML)
01:18:48.873 Installing versions!
01:18:49.662 Exception in thread "main" joptsimple.MissingRequiredOptionException: Missing required option(s) ['userProperties']
	at joptsimple.OptionParser.ensureRequiredOptions(OptionParser.java:447)
	at joptsimple.OptionParser.parse(OptionParser.java:437)
	at net.minecraft.client.main.Main.main(SourceFile:87)
01:18:49.662 Process crashed with exit code 1