Same script, two computers, two completely different backtest results!

[skytrader91]

I'm new to automated trading and wanted to try out some scripts. I download them to NT7, run back tests and they're profitable. I send them to my work computer by emailing myself to show a friend and after I run the back tests on that computer they come back with a loss!

The only thing I know I did differently for the first computer was when one of the strategies asked me to overwrite my ninja indicators with older ones I clicked no. The second computer I accidentally clicked yes. Assuming that was the problem I completely uninstalled and reinstalled ninja. Re-downloaded the script and still got negative results and yet when I go home I still have positive results on my home computer.

Does anyone know what is happening or can explain this phenomenon?

The scripts I tested are from Big Mike's Trading Forum. Cambo by Trend Follower and Volatility Breakout Pattern by minsalaco. Under NT7 strategies.

[NinjaTrader_ChelseaB]

Hi skytrader91,

Have you double checked the charts to make sure that the data is exactly the same?

Are the connections the same?

Is the first bar at the same time and does it have the same OHLC on both computers?
Same with the last bar on the chart?

You can also add a print to your code and print the OHLC and Time of every bar to compare these with text.