write.as

Things to try if Apex Toolkit is not connecting and/or there's an error and no deviation levels on charts (e.g. "The remote server returned an error (503) Server Unavailable")

Deviation levels error

Reload ninjascript (hotkey F5, or right-click –> reload ninjascript)

You may have to do this a few times before the error clears, but it usually works. If not, shut down NinjaTrader, clear historical data, restart and try again.

If that doesn't work, just leave the chart up for 30 minutes, then reload ninjascript and that will usually clear the error and display deviation levels.

If it still does not clear after reloading ninjascript at least 5 times, you can try the next options...

Apex Toolkit server error

First, flush your computer's DNS cache:

Second, clear your browser DNS cache:

https://www.screencast.com/t/jN3Wl7g2eggz

If this does not resolve the issue, you might have to continue flushing the DNS and restarting the computer. For some, it has worked after doing this several times.

Apex programmer: “Here's what gets me working, has so far every time. Clear all browser dns, close them. Clear flush computer DNS in command prompt. RESTART the computer. Open whatever, if it doesn't work, flush dns again then it usually works.

Other things to try:

  1. In windows proxy settings, disable 'Automatically detect settings'.
  2. In Chrome, clear host cache here: chrome://net-internals/#dns
  3. Restart computer
  4. Go into windows proxy settings again, and re-enable automatically detect settings
  5. Retrieving NT8 toolkit releases should now work

You can keep trying any combination of all the above suggestions until it works. Outside of these things, there are currently no other recommendations aside from waiting for it to be resolved on the backend.