Uncaught Error: module version mismatch. Expected 50, got 48. bindings.js

[nickstew]

Issue

## Investigation

This issue lies somewhere between electron and serialport. Thanks to #1204 and this comment, I was able to come up with a solution for this problem. I hope this leads you in the right direction.

Solution Steps

Install node-gyp Globally

I did this to make it easier to reference later when we rebuild serialport with it.

  npm install -g node-gyp

Change Directory to where serialport is in your project

node-gyp is going to use the current directory for which module to rebuild.

  cd `npm ls serialport --parseable`

Rebuild serialport

This is mostly taken from that issue comment linked above.

I assume that we need to reference ~/.electron-gyp so that it uses the electron version as the targeted version instead of using an electron version number to target a specific version of node.

I added the dynamic target so that as electron gets updated you won't have to change this line.

  HOME=~/.electron-gyp node-gyp rebuild --target=`npm view electron version` --arch=x64 --dist http://atom.io/download/atom-shell

Done!

After that you should be good to navigate back to the root of your project and run it.

Obligatory Version Table and Disclaimer

OS	node	npm	electron	johnny-five	serialport
OSX 10.11.6	6.3.1	2.11.3	1.4.1	0.10.1	4.0.1

Disclaimer: I have only verified that it works on my machine and have not tried Windows or Linux operating systems.

[lukeorland]

I followed these instructions and was successful, in that I didn't get the "Module version mismatch" exception. However, I couldn't figure out how to use the UI to get a race running.

[nickstew]

@lukeorland have you tried going to the race screen? The hardware should connect once you're on that screen and you should be able to see the lights change if you trigger the sensors.

[taktran]

I had this issue with xpc-connection for bluetooth, and worked amazingly! Thanks!

[taktran]

Actually using electron-rebuild seems to fix the problem