| Symptom | Likely Cause | Quick Fix | |---------|--------------|-----------| | | Running on 64‑bit Windows without compatibility mode. | Right‑click → Properties → Compatibility → Run this program in compatibility mode for Windows 7 → Run as administrator . | | License key rejected | Wrong key (e.g., for a newer version) or key not yet activated. | Double‑check the key in Client Center; if still failing, contact Support. | | Missing RadarScreen or other modules | Modules deselected during install. | Re‑run installer → Modify → tick the missing components. | | Connection to data feed fails | Firewall blocking ports (typically 443, 80, 443 + specific TradeStation ports). | Add an outbound rule for TradeStation.exe or temporarily disable firewall to test. | | Platform crashes on start | Corrupt user profile or old configuration files. | Delete/rename the folder %APPDATA%\TradeStation\9.5 (it will be recreated). |
You need an active TradeStation brokerage account (or a “demo”/paper‑trading account) to obtain a license for the 9.5 platform. download tradestation 9.5