Arduino 1.8.10 IDE silently fails to open on Windows 10

[stockhuman]

Hello gang,

Upon installing the latest and greatest IDE, I can no longer start it. Attempting to open it via the executable directly, or though cmd/PS/cygwin does nothing. I have not opened my copy of 1.8.9 in a while, and upon downgrading I now cannot open that either.

I'm currently wondering if this is a Windows 10 thing (I am completely up to date as of time of posting), a dual-monitor thing, or something else entirely.

I have reinstalled the IDE a few times now, if that changes anything. Your help is appreciated.

[per1234]

Please do this:

1. Start the Windows command line "cmd".
2. Run the program arduino_debug.exe that you will find in the Arduino IDE installation folder from the command line.
3. Copy the output that's printed to the cmd window and paste it here using code fencing.

Hopefully that will give us some information we can use to help you with the problem.

[stockhuman]

Well there's a handy tool. Thank you for your help!
-Xmx2048M was set as a PATH Java option, leading to a failure to allocate the 2097152KB demanded by the IDE. This must be conflicting software or changes I've made an forgotten about since last opening the Arduino.

[muething]

Windows 10 64 bit pro Updated approx June 8: Tried deleting all and re installing. Here is the results from Command Prompt execution of arduino_debug.exe
Rick Muething, rmuething@cfl.rr.com

c:\Program Files (x86)\Arduino>arduino_debug.exe
Set log4j store directory C:\Users\rmuet\AppData\Local\Arduino15
Loading configuration...
Initializing packages...
java.lang.NullPointerException
at cc.arduino.contributions.packages.ContributionsIndexer.parseIndex(ContributionsIndexer.java:134)
at processing.app.BaseNoGui.initPackages(BaseNoGui.java:504)
at processing.app.Base.(Base.java:273)
at processing.appBase.manin(Base.java:150)

[per1234]

Hi @muething. Please see the instructions here: #10345