A few days ago it was brought to my attention I was running and unofficial version of Arduino IDE (1.7.6). I have no idea how I got it. But I have just dl and installed v1.6.6 from this site. After re-opening it, I got a popup about updating my libraries. I clicked on the libraries link in the popup and got the Library Manager. One by one I clicked on Update but 2 libraries will not update as the others:
LCD & SD
when i click on Update a popup asks me if Im sure I want to delete them?
What should I do?