Hi. I would like to ask you to open a issue on GitHub: https://github.com/Smile4ever/firefoxaddons/issues/new

Please provide the following information:
* Your Firefox version
* If you have e10s enabled or not
* What website you used to test Scrollkey
* What version broke Scrollkey for you (1.0 or 1.0.1?)
* What version of Scrollkey is working for you

Please write "Scrollkey:" as the first thing in the title of your bug report. Thank you. You may also open an issue about the Spanish translation, so I can provide you with instructions.