I actually found this article (https://www.redgiant.com/support/faq/product-specific/trapcode-particular/185/).
Apparently this is common with big upgrades. I was getting the same amount of message windows. I used the “t2_” as the article indicated and that knocked it down to one window to click through titled “Trapcode Particular had no sequence data. Using defaults”. Hopefully there is a Red Giant update to remove these messages.