Unable to open chart strategy window

[Red_70]

As stated in the title, I am not able to open the strategy window for an existing chart. NT reports error "Unhandled exception. Object reference not set to an instance of object.", or sometimes a variation that states "Most likely either the implementation no longer exists or there is no..." and the NT app closes before I can read the entire message. I uninstalled and re-downloaded and installed the NT software after renaming my existing NinjaTrader 8 folder, but the problem persists. I found several mentions of this error in the support forum but none that were associated with not being able to open the strategy window.

How can I resolve this error?

[NinjaTrader_BrandonH]

Hello Red_70,

Thanks for your post.

Please follow the steps below to send your log and trace files to support[at]ninjatrader[dot]com so that I may investigate this matter further. In the subject of the email include "ATTN: BrandonH" and in the body of the email include a link to this forum thread.

Follow the steps below to manually attach your log and trace files to your email.

• Open your NinjaTrader folder under, "Documents" (sometimes called, "My Documents")
• Right click on the 'log' and 'trace' folders and select Send To> Compressed (zipped) Folder.
• Send the 2 compressed folders as attachments to this email.
• Once complete, you can delete these compressed folders.

I look forward to assisting further.

[Red_70]

Thanks, Brandon!

[Red_70]

After following troubleshooting steps provided by Brandon, I found the problem: I had an incorrectly formatted variable declaration in the section

public class HourlyLongOrShortES : Strategy
{
}

That incorrect declaration was

private DateTime referenceDateTime = new DateTime(2020, 0, 0, 0, 0, 0);

which is clearly not a legal datetime value. I'm surprised, though, that the compiler didn't catch it.