# On Startup: "That's new to me - A strange and unexplainable error occurred"
**URL:** https://discourse.processing.org/t/on-startup-thats-new-to-me-a-strange-and-unexplainable-error-occurred/40899
**Category:** Processing for Pi
**Created:** [February 11, 2023, 11:47am UTC](https://discourse.processing.org/t/on-startup-thats-new-to-me-a-strange-and-unexplainable-error-occurred/40899 "2023-02-11T11:47:10Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@fabianluscher](https://discourse.processing.org/u/fabianluscher)
#### Post date: [February 11, 2023, 11:47am UTC](https://discourse.processing.org/t/on-startup-thats-new-to-me-a-strange-and-unexplainable-error-occurred/40899/1 "2023-02-11T11:47:10Z")
Hi all!
for some time i could perfectly work with processing 4.1 on my raspbi 3 B+, but two times now it happend that i cannot start the application anymore. I swear i did not do anything between a working processing and this error, it just stopped working:
```auto
That's new to me
A strange and unexplainable error occurred
while trying to create a new sketch.
java.io.IOException: Could not create directory /tmp/processing/02774c68-........6f8/sketch_230211a
at processing.app.Base.handleNew(Base.java:1115)
at processing...
```
My folder permissions for /tmp/processing is drwxr-xr-x. Is that somehow bad?
This might be related to my other post about missing libraries as i try to solve both?
> [@Cannot run processing-java from bashfile; but works directly from terminal](https://discourse.processing.org/t/cannot-run-processing-java-from-bashfile-but-works-directly-from-terminal/40898):
>
> Hi all! I want to run a processing sketch on startup of my raspberry pi. therefore I added this line to /home/esc/.config/lxsession/LXDE-pi/autorun: sudo /home/esc/Applications/processing-4.1.2/processing-java --sketch=/home/esc/Applications/sketchbook/elisas\_synchronotron --run this does not work - same when running the same line from a bashfile startSketch.sh: #!/usr/bin/env bash sudo /home/esc/Applications/processing-4.1.2/processing-java --sketch=/home/esc/Applications/sketchbook/elisas…
thanks for any ideas!
some infos about my setup:
processing 4.1.2
Raspbian GNU/Linux 11 (bullseye)
Raspberry Pi 3 Model B Rev 1.2
---
### Author:  [@fabianluscher](https://discourse.processing.org/u/fabianluscher)
#### Post date: [February 13, 2023, 9:28am UTC](https://discourse.processing.org/t/on-startup-thats-new-to-me-a-strange-and-unexplainable-error-occurred/40899/2 "2023-02-13T09:28:31Z")
If I open a sketch `.pde` file directly, processing opens it, as it does not have to create a folder in `/tmp`.
But if i rund it - even an emptied one! - it says:
“Build folder bad - Could not find a place to build a sketch.”
```auto
Cannot invoke "java.io.File.getAbsolutePath()" because "this.binFolder" is null
java.io.IOException: Permission denied
at java.base/java.io.UnixFileSystem.createFileExclusively(Native Method)
at java.base/java.io.File.createTempFile(File.java:2170)
at processing.app.Util.createTempFolder(Util.java:229)
at processing.app.Sketch.makeTempFolder(Sketch.java:1595)
at processing.mode.java.JavaBuild.build(JavaBuild.java:92)
at processing.mode.java.JavaMode.handleLaunch(JavaMode.java:108)
at processing.mode.java.JavaEditor.lambda$handleLaunch$20(JavaEditor.java:608)
at java.base/java.lang.Thread.run(Thread.java:833)
java.io.IOException: Permission denied
at java.base/java.io.UnixFileSystem.createFileExclusively(Native Method)
at java.base/java.io.File.createTempFile(File.java:2170)
at processing.app.Util.createTempFolder(Util.java:229)
at processing.app.Sketch.makeTempFolder(Sketch.java:1595)
at processing.mode.java.JavaBuild.build(JavaBuild.java:92)
at processing.mode.java.JavaMode.handleLaunch(JavaMode.java:108)
at processing.mode.java.JavaEditor.lambda$handleLaunch$20(JavaEditor.java:608)
at java.base/java.lang.Thread.run(Thread.java:833)
java.lang.NullPointerException: Cannot invoke "java.io.File.getAbsolutePath()" because "this.binFolder" is null
at processing.mode.java.JavaBuild.preprocess(JavaBuild.java:164)
at processing.mode.java.JavaBuild.preprocess(JavaBuild.java:145)
at processing.mode.java.JavaBuild.build(JavaBuild.java:110)
at processing.mode.java.JavaBuild.build(JavaBuild.java:92)
at processing.mode.java.JavaMode.handleLaunch(JavaMode.java:108)
at processing.mode.java.JavaEditor.lambda$handleLaunch$20(JavaEditor.java:608)
at java.base/java.lang.Thread.run(Thread.java:833)
```
Any ideas?
---
### Author:  [@fabianluscher](https://discourse.processing.org/u/fabianluscher)
#### Post date: [February 13, 2023, 10:04am UTC](https://discourse.processing.org/t/on-startup-thats-new-to-me-a-strange-and-unexplainable-error-occurred/40899/3 "2023-02-13T10:04:43Z")
Solved:
Somehow, the owner / group ownership got (?) changed for the folder `/tmp/processing` where tmp files are created for running a sketch. The owner/group was “root / root” and i’m not sure what the initial value was.
If I change those to my current user with
```auto
$ sudo chgrp GROUPNAME /tmp/proccessing
$ sudo chown OWNERNAME /tmp/proccessing
```
It works again.
Not sure how long though. and what I did that those ownerships got changed or what else might be amiss.
EDIT: calling “sudo …/processing-java --sketch=… --run” inside `home/USER/.config/lxsession/LXDE-pi/autostart` sets user/group of `/tmp/processing root/root` somehow