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Hello,
Thank you for your forum post.
This indicates that you did not uninstall NinjaTrader 7 beta 20 before installing B21.
Critical Upgrade Instructions
To install Beta 21, it is MANDATORY to first uninstall any prior version before installing. This procedure will not remove your data and settings.
For people upgrading from Beta 16 or later please use the following steps:
- Uninstall NinjaTrader 7 via Windows Control Panel
- Delete the folder C:\Program Files\NinjaTrader 7 if you have a 32-bit machine OR
- Delete the folder C:\Program Files (x86)\NinjaTrader 7 if you have a 64-bit machine
NOTE: Deleting these directories will remove any custom sounds you may have
- Install NinjaTrader 7 Beta 21
Then download and install NinjaTrader beta 21.
Let me know if I can be of further assistance.BrettNinjaTrader Product Management
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