As the Guardian has been stopped since 1st Nov the older version of NR Supertrend wont work. Download the latest version( Does not requires Guardian)
Download Non Repainting Supertrend indicator for MT4 Platform and follow the installation guidelines as mentioned below.
Steps for installing Supertrend MT4 indicator
1) Download/Copy/Save the EX4 file into your C:Program FilesMetaTrader 4expertsindicators folder .
2) Launch your MetaTrader application
3) On the left hand side, look for the “Navigator” window
4) Under the “Common” tab, look into the “Custom Indicators” directory
5) Locate the indicator which you have just downloaded into the folder stated in Step 1
6) Drag (Click and drag) the indicator onto the chart
7) Bingo… done