NinjaTrader Development

NinjaTrader Code Repair: Fix Broken NinjaScript Indicators and Strategies

Get help with NinjaTrader code repair, NinjaScript compile errors, broken indicators, strategy bugs, NT7 to NT8 issues, and repair-versus-rebuild decisions.

31 MAY, 2026 .6 min read
NinjaTrader NinjaScript Code Repair
NinjaTrader code repair

Moore Tech Insight

NinjaTrader code repair is the right starting point when a script already exists, but it does not compile, import, plot, backtest, or behave the way it should. The goal is not always to add features. The first job is to find out whether the problem is a small code fix, a platform setup issue, missing dependencies, or a sign that the file should be rebuilt.

Moore Tech handles NinjaTrader programming for indicators, strategies, add-ons, conversions, and broken NinjaScript files.

Common NinjaTrader code repair requests

Most repair requests fall into a few practical categories:

  • NinjaScript compile errors after an update.
  • Import errors when installing an exported add-on.
  • Indicators that plot incorrectly or stop drawing after reload.
  • Strategies that backtest but fail in real time.
  • NT7 scripts that were partially converted to NinjaTrader 8.
  • Add-ons or Chart Trader buttons that break during reloads, workspace changes, or reconnects.

Each issue needs a different diagnostic path. A compile error may be a missing namespace or outdated API call. A strategy behavior issue may involve historical versus real-time processing, order state, account position, or data-feed assumptions.

What to send for repair

The fastest repair path starts with reproducible details. Send:

  • The NinjaTrader version.
  • The .cs file or exported .zip.
  • The full compile or runtime error text.
  • Screenshots of the chart, strategy settings, and any relevant output window messages.
  • Instrument, bar type, bar size, and trading-hours template.
  • A short explanation of what should happen and what happens instead.

If you only send a screenshot, the answer is usually limited. If you send the file and exact reproduction steps, Moore Tech can usually tell whether the first step should be a diagnostic, repair, or rebuild.

Repair or rebuild?

Repair makes sense when the file is organized enough to safely change. Rebuild may be cleaner when the code was copied from multiple sources, important dependencies are missing, order handling is unreliable, or the old file cannot support the requested behavior.

A rebuild is not automatically more expensive in the long run. Sometimes it avoids paying repeatedly to patch a structure that keeps breaking.

Best next step

If the issue is bounded, start with paid support or a code repair diagnostic. If the file needs new features, order handling, strategy logic, or a platform conversion, use the NinjaTrader programmer page and include the files.

Request NinjaTrader code repair and send the file, error, screenshots, and expected behavior.