# Processing 3.4 UnsatisfiedLinkError when trying Visualiser example Pycom
**URL:** https://discourse.processing.org/t/processing-3-4-unsatisfiedlinkerror-when-trying-visualiser-example-pycom/4013
**Category:** Electronics (Arduino, etc.)
**Created:** [October 1, 2018, 12:44pm UTC](https://discourse.processing.org/t/processing-3-4-unsatisfiedlinkerror-when-trying-visualiser-example-pycom/4013 "2018-10-01T12:44:50Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@MinaDarsh](https://discourse.processing.org/u/MinaDarsh)
#### Post date: [October 1, 2018, 12:44pm UTC](https://discourse.processing.org/t/processing-3-4-unsatisfiedlinkerror-when-trying-visualiser-example-pycom/4013/1 "2018-10-01T12:44:50Z")
Hello, for learning how to use the Pycom PyTrack, I’m following [this](https://core-electronics.com.au/tutorials/pycom-pytrack-getting-started.html) tutorial from Core-Electronics. Sadly, when getting to the visualiser example that Pycom also uses on their site, I run into a pretty big error that I can’t make sense off. (I’m just getting started with all this.)
I got the log here in a [Pastebin](https://pastebin.com/SLxw4Y44) paste, a lot is being said about Java, so made sure that it is up to date, but that didn’t change anything either.
Also made sure the Serial is set to COM8 as that is what my device is on.
If any more info is needed, let me know.
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### Author:  [@jeremydouglass](https://discourse.processing.org/u/jeremydouglass)
#### Post date: [October 3, 2018, 2:07am UTC](https://discourse.processing.org/t/processing-3-4-unsatisfiedlinkerror-when-trying-visualiser-example-pycom/4013/2 "2018-10-03T02:07:22Z")
> [@MinaDarsh](#):
>
> Pycom PyTrack
So you are running a Python mode (processing.py) on the PyTrack, is that right?
Can you give the code contents of main.py you are running? The tutorial only shows a modified version for the PySense – and it would be good to have it in this thread anyhow.