Samuel Coelho

Thanks for reporting this problem. I will reference this on the `Readme.md` file. This only applies to `MacOS`. You can get the latest MacTex distribution from the following link: -...

I found a solution which is to replace: ``` javascript oldTarget = oldTouch.target; ``` by the following: ``` javascript oldTarget = oldTouch ? oldTouch.target : sourceEvent.srcElement; ```