# Latest release fails to run

**URL:** https://forum.makecode.com/t/latest-release-fails-to-run/2062
**Category:** Maker
**Created:** [May 12, 2020, 5:40pm UTC](https://forum.makecode.com/t/latest-release-fails-to-run/2062 "2020-05-12T17:40:58Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![suraj022](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/suraj022/32/821_2.png) [@suraj022](https://forum.makecode.com/u/suraj022)
#### Post date: [May 12, 2020, 5:40pm UTC](https://forum.makecode.com/t/latest-release-fails-to-run/2062/1 "2020-05-12T17:40:58Z")

</div>

latest release of pxt-maker 0.13.41 fails to run.  
`pxt serve` command exits with the following error

`pxt_modules/jacdac/config.ts(1,1): error TS9200: Assertion failed`

what’s wrong?

---

<div class="post-metadata">

### Author: ![peli](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/peli/32/12_2.png) [@peli](https://forum.makecode.com/u/peli)
#### Post date: [May 24, 2020, 12:22am UTC](https://forum.makecode.com/t/latest-release-fails-to-run/2062/2 "2020-05-24T00:22:05Z")

</div>

This is fixed.