Can't get Ubooquity to start on Windows 10

Hi. I'm having an issue trying to get Ubooquity to run on my computer. I'm on Windows 10 and have a fresh install of Ubooquity downloaded and unzipped.

Honestly, I wasn't sure which Java exe I should be opening Ubooquity.jar with, so I tried them all. (I'm using Java Version 8 Update 211. The install folder is named "jre1.8.0_211". I downloaded the x64 version.)

Trying java.exe, I see the Windows command prompt quickly flash and go away.

Trying javaw.exe, I don't see any action on my screen at all.

Trying javaws.exe, I get an "Application Error - Unable to launch the application." popup. The Exception and Wrapped Executions tabs of the details read:

CouldNotLoadArgumentException[ Could not load file/URL specified: C:\Users\Alex\Downloads\Ubooquity-2.1.2\Ubooquity.jar]
	at com.sun.javaws.Main.launchApp(Unknown Source)
	at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
	at com.sun.javaws.Main.access$000(Unknown Source)
	at com.sun.javaws.Main$1.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: File too large
	at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source)
	... 5 more

java.io.IOException: File too large
	at com.sun.javaws.jnl.LaunchDescFactory.buildDescriptor(Unknown Source)
	at com.sun.javaws.Main.launchApp(Unknown Source)
	at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
	at com.sun.javaws.Main.access$000(Unknown Source)
	at com.sun.javaws.Main$1.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

My Ubooquity folder currently has just the Ubooquity.jar file. No logs have been generated.

If anyone has any advice, I would really appreciate it. Thanks.