# \[Solved\] Migrated App, Blynk won't compile

**URL:** https://community.particle.io/t/solved-migrated-app-blynk-wont-compile/35308
**Category:** Troubleshooting
**Created:** [August 14, 2017, 12:55am UTC](https://community.particle.io/t/solved-migrated-app-blynk-wont-compile/35308 "2017-08-14T00:55:31Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![tyler785](https://avatars.discourse-cdn.com/v4/letter/t/bc79bd/32.png) [@tyler785](https://community.particle.io/u/tyler785)
#### Post date: [August 14, 2017, 12:55am UTC](https://community.particle.io/t/solved-migrated-app-blynk-wont-compile/35308/1 "2017-08-14T00:55:31Z")

</div>

I migrated a long existing app of mine that includes Blynk and now it won’t compile using the web IDE. I’ve tried to remove it and re-add it but I get the same error:

```
lib/blynk/src/utility/BlynkDebug.cpp:9:30: fatal error: Blynk/BlynkDebug.h: No such file or directory
 #include <Blynk/BlynkDebug.h>
                          ^
compilation terminated.
make[1]: *** [../build/target/user/platform-6lib/blynk/src/utility/BlynkDebug.o] Error 1
make: *** [user] Error 2

```

I even tried making a blank app with just blynk and the same thing happens.

```
// This #include statement was automatically added by the Particle IDE.
#include <blynk.h>

void setup() {

}

void loop() {

}

```

What am I missing?

Thanks for any help.

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<div class="post-metadata">

### Author: ![Moors7](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/moors7/32/588_2.png) [@Moors7](https://community.particle.io/u/Moors7)
#### Post date: [August 14, 2017, 1:09am UTC](https://community.particle.io/t/solved-migrated-app-blynk-wont-compile/35308/2 "2017-08-14T01:09:48Z")

</div>

Make sure you use a recent version of system firmware (\>=0.5.3)

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<div class="post-metadata">

### Author: ![tyler785](https://avatars.discourse-cdn.com/v4/letter/t/bc79bd/32.png) [@tyler785](https://community.particle.io/u/tyler785)
#### Post date: [August 14, 2017, 1:12am UTC](https://community.particle.io/t/solved-migrated-app-blynk-wont-compile/35308/3 "2017-08-14T01:12:07Z")

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I’m an idiot. Yup, Just had to up the dropdown to 0.6.0.

Thanks!!

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<div class="post-metadata">

### Author: ![ScruffR](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/scruffr/32/6952_2.png) [@ScruffR](https://community.particle.io/u/ScruffR)
#### Post date: [August 14, 2017, 6:50am UTC](https://community.particle.io/t/solved-migrated-app-blynk-wont-compile/35308/4 "2017-08-14T06:50:46Z")

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Actually 0.6.2 would be better - there were many fixes and enhancments since 0.6.0