Updated to 8.1.2.1, now unirenko charts won't load

[nt168]

I Updated to 8.1.2.1, now unirenko charts won't load.
I've posted 2 error boxes in 1 attached photo. Top one I received only once upon first time starting NT8 after update.
When I create new chart, unirenko is not on list. So I tried to check my add-ons, and get the bottom error box.

I'm not very technical and don't know what they mean.
I'd appreciate any suggestions.

[NinjaTrader_Manfred]

Hello nt168,

Thank you very much for your post.

We have detailed the troubleshooting steps to resolve this in our Help Guide below:

https://support.ninjatrader.com/s/article/How-Can-I-Troubleshoot-Compile-Errors-when-Working-with-NinjaScript

Of course, please don't hesitate to reach out to us directly at support (at) ninjatrader (dot) com if you would like assistance!

[nt168]

I followed the troubleshooting steps and nothing changed. Per the troubleshooting page instructions, I'll submit to NinjaTrader's support team.
Thanks anyway