# Can't build, gradle errors

**URL:** https://discourse.processing.org/t/cant-build-gradle-errors/4197
**Category:** Processing for Android
**Created:** [October 6, 2018, 6:48pm UTC](https://discourse.processing.org/t/cant-build-gradle-errors/4197 "2018-10-06T18:48:55Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![lmccandless](https://avatars.discourse-cdn.com/v4/letter/l/f0a364/32.png) [@lmccandless](https://discourse.processing.org/u/lmccandless)
#### Post date: [October 6, 2018, 6:48pm UTC](https://discourse.processing.org/t/cant-build-gradle-errors/4197/1 "2018-10-06T18:48:55Z")

</div>

I’m trying to setup android mode, but I’m having a problem compiling my first sketch.

[https://pastebin.com/rNvd3J82](https://pastebin.com/rNvd3J82) here is the console output

It seems aidl is missing and gradle isn’t finding the right files?

A quick googling for aidl missing shows it’s likey to do with the SDK version number, but processing doesn’t seem to give much options for adjusting such things.

I was able to compile and run a hello world app on my phone from android studio just now, so it’s something to do with android mode for processing.

`Caused by: java.lang.IllegalStateException: aidl is missing from 'C:\Users\Desktop\Documents\Processing\android\sdk\build-tools\26.0.2\aidl.exe'`

C:\Users\Desktop\Documents\Processing\android\sdk\build-tools\26.0.2\ this folder exists but it does not have aidl.exe in it. i just did a fresh android sdk install.

This is the recommended fix but it’s not remotely clear how to go about doing this for processing

```auto
Changing the Build Tools Version from 23.0.0 rc1 to 22.0.1 in the Project Structure, then Clean and Rebuild worked for me.

```

EDIT: I was able to fix this by deleting the folder C:\Users\Desktop\Documents\Processing\android\sdk\build-tools\26.0.2\