# Library problems

**URL:** <https://community.particle.io/t/library-problems/6905>\
**Category:** Troubleshooting\
**Created:** [September 11, 2014, 6:33pm UTC](https://community.particle.io/t/library-problems/6905 "2014-09-11T18:33:46Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![Julian](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/julian/32/706_2.png) [@Julian](https://community.particle.io/u/Julian)\
**Post date:** [September 11, 2014, 6:33pm UTC](https://community.particle.io/t/library-problems/6905/1 "2014-09-11T18:33:46Z")

</div>

I have been writting some code for my word clock. All was fine until last night, when I started getting errors relating to the libraries and their presence or otherwise. The clock is a long strip of neo pixels. I have included the neopixel library. I have had this code working for some days but then it just stopped and started giving me the followinf error,

```
word_clock_2.cpp:14:31: fatal error: neopixel/neopixel.h: No such file or directory
'#include "neopixel/neopixel.h"
^
compilation terminated.
make: *** [word_clock_2.o] Error 1

```

The first bit of my code is as follows,

```
'#include "application.h"
//#include "spark_disable_wlan.h" (for faster local debugging only)
'#include "neopixel/neopixel.h"

// IMPORTANT: Set pixel COUNT, PIN and TYPE
'#define PIXEL_PIN D2
'#define PIXEL_COUNT 107
'#define PIXEL_TYPE WS2812B

```

Any ideas what is going on?

I thought I had solved it last night by cutting the exact same code from this app and putting it into a newly created app. This worked but only for a short time.

Any ideas?

Any help would be much appreciated 😉

Julian

---

<div class="post-metadata">

**Author:** ![bko](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/bko/32/20704_2.png) [@bko](https://community.particle.io/u/bko)\
**Post date:** [September 11, 2014, 7:02pm UTC](https://community.particle.io/t/library-problems/6905/2 "2014-09-11T19:02:02Z")

</div>

Hi @Julian

I think a few people are having problems with that right now and @Dave is investigating.

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**Author:** ![mdma](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/mdma/32/1924_2.png) [@mdma](https://community.particle.io/u/mdma)\
**Post date:** [September 11, 2014, 7:02pm UTC](https://community.particle.io/t/library-problems/6905/3 "2014-09-11T19:02:56Z")

</div>

Hi Julian, Sorry to hear of the problems. There have been a few other reports of vanishing libraries, and the spark IDE team are looking at it. In the meantime, a workaround is to remove the library from your app and then add it again. That will get compilation working.

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**Author:** ![jgoggins](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/jgoggins/32/20654_2.png) [@jgoggins](https://community.particle.io/u/jgoggins)\
**Post date:** [September 11, 2014, 7:25pm UTC](https://community.particle.io/t/library-problems/6905/4 "2014-09-11T19:25:43Z")

</div>

Indeed, sorry about the troubles @Julian , we are actively investigating this now. Could you PM me the app build URLs where the problem you described above occurred (i.e. [https://www.spark.io/build/SOME\_ID\_HERE](https://www.spark.io/build/SOME_ID_HERE)), so I can look more closely at the underlying logs, events, and database while troubleshooting this issue?

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<div class="post-metadata">

**Author:** ![Julian](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/julian/32/706_2.png) [@Julian](https://community.particle.io/u/Julian)\
**Post date:** [September 11, 2014, 7:48pm UTC](https://community.particle.io/t/library-problems/6905/5 "2014-09-11T19:48:13Z")

</div>

@bko @mdma @jgoggins,

Thank you very much for your quick response. I thought it was just me!

I am sure with you lot on the case it will get sorted out pretty soon.

Cheers,

Julian