Hello JT,
Glad to see you were able to narrow down the problem and find the conflict. Do you have anything in your error log that might point to the conflict?
Also, I can try to load it on my dev site real quick and see if I can find the conflict. Is there a link to download the Pagelines Updater?
I am not sure I can 100% resolve this as plugin conflicts are usually beyond the level of support we can provide per our terms of service. However, I would like to take a look and see if I have a quick solution for this one.
Let me know, thanks.