Why the Arduino IDE isn't opening?

Question

The title is self-explanatory. Here is what returns arduino_debug.exe:

D:\Arduino>arduino_debug.exe
Set log4j store directory C:\Users\Kiwi\AppData\Local\Arduino15
Loading configuration...
Initializing packages...
java.lang.NullPointerException
    at cc.arduino.contributions.packages.ContributionsIndexer.parseIndex(Con
tributionsIndexer.java:134)
    at processing.app.BaseNoGui.initPackages(BaseNoGui.java:483)
    at processing.app.Base.<init>(Base.java:273)
    at processing.app.Base.main(Base.java:150)

D:\Arduino>

PS: I already tried reinstalling the latest version.

https://github.com/arduino/Arduino/issues/10341#issuecomment-641836099 — Juraj, Jun 10 '20 at 08:44
Does this answer your question? [Arduino IDE (Win10) crashes when I launch the program](https://stackoverflow.com/questions/62290881/arduino-ide-win10-crashes-when-i-launch-the-program) — gre_gor, Jun 10 '20 at 14:26

Gulu Bulu · Answer 1 · 2020-06-10T09:27:30.477

-2

You must delete whole folder Arduino15 in C:\Users{username}\AppData\Local\ I suggest you make backup of folder before delete !

edited Jun 10 '20 at 09:27

answered Jun 10 '20 at 09:21

Gulu Bulu

7
2

you must not delete the whole folder. you would lost your settings and all the boards packages. the link I put in comment has the solution. it was a problem for some hours and is fixed. only two files should be deleted to recover. – Juraj Jun 10 '20 at 10:12

Why the Arduino IDE isn't opening?

1 Answers1