Connection Error after update

[PDT123]

I just updated from beta 20 to 21 and now I get an error when trying to connect to my Mirus/Zenfire connection.

"Login failed: Cbi.Connection.ConnectNow: Failed to call IAdapter.Connect: Method not found: 'Void com.omnesys.rapi.REngineParams.set_LogFilePath(Sys tem.String)'."

I can still connect to other connections such as Kinetick.

I tried deleting the connection and adding it again but I get the same error.

[NinjaTrader_Chip]

Hello PDT123,

Thank you for your 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.

http://www.ninjatrader.com/webnew/download_trading_software.htm

Please let me know if you have any additional questions.