One To Many Grandparent Fields Junciton Rollups Not Working in 1.7.20

[Dustin-Northcutt]

When upgrading to the new release I'm getting this error when using Junction Objects in rollups:
Didn't understand relationship 'TaskRelations' in field path. If you are attempting to use a custom relationship, be sure to append the '__r' after the custom relationship name.
Here is my CMDT record. The only change made was upgrading the package. As always thanks for the help!

[jamessimone]

@Dustin-Northcutt I was able to take a brief look at this tonight, but I wasn't able to reproduce the issue you're describing. Here's the rollup metadata I set up, which largely seems the same as yours:

That being said, this rollup worked without any issue. Let me know what else I can do to help!

[Dustin-Northcutt]

Thanks for investigating! I'll keep digging in and see if it's user error.