This work for me.
- Download package to your computer
- In Joomla Administrator
- Go to install
- Upload Package File
- Browse to package on your computer
- Upload & Install
If that don't work try this upload extracted file to you server
- Create a folder inside "tmp" folder in tmp/your package name (using an FTP or file manager).
- Copy all the Extracted files to your server tmp/your package name
- In Joomla Administrator navigate to Extensions - Manager - Install
- Go to Install from Folder
- Type in the right path in form field tmp/your package name.
- Click install