Problem with DateTime library

Hello, I am trying to install the DateTime library, but I am running into a lot of troubles.

I use an Arduino 1.8.

I have tried to dowload old version of the libraries, but I have compilation errors.

The new library recommended by playground (Arduino Playground - Time) is included in Teensyduino (Time Library, Timekeeping and Time/Date Manipulation on Teensy), but when I uploaded it I couldn't load my sketches on my arduino anymore (the library worked anyway, but Teensyduino was a big problem). I had to completly uninstall and reinstall Arduino after.

Does anybody knows how to dowload this library?

cuipoune:
I have tried to dowload old version of the libraries, but I have compilation errors.

When you encounter an error you'll see a button on the right side of the orange bar "Copy error messages". Click that button. Paste the error in a message here USING CODE TAGS (</> button on the toolbar).

cuipoune:
The new library recommended by playground (Arduino Playground - HomePage) is included in Teensyduino (Time Library, Timekeeping and Time/Date Manipulation on Teensy), but when I uploaded it I couldn't load my sketches on my arduino anymore (the library worked anyway, but Teensyduino was a big problem).

Again, we need more details of exactly what you mean by "I couldn't load". You're not helping your cause by being so vague.