I can't play minecraft after i installed BOTH snapshots

This error occurred:

Client> Exception in thread "main" joptsimple.MissingRequiredOptionException: Missing required option(s) ['version']
Client> at joptsimple.OptionParser.ensureRequiredOptions(OptionParser.java:447)
Client> at joptsimple.OptionParser.parse(OptionParser.java:437)
Client> at net.minecraft.client.main.Main.main(SourceFile:39)
Game ended with bad state (exit code 1)
Deleting C:\Users\DENNIS\AppData\Roaming\.minecraft\versions\13w23b\13w23b-natives-3520313548203
Couldn't delete C:\Users\DENNIS\AppData\Roaming\.minecraft\versions\13w23b\13w23b-natives-3520313548203 - scheduling for deletion upon exit