I installed the 32 bit version of Renoise 3.1.0 on a Windows XP desktop and it gave me this same exact message. This attached screenshot is from a Lenovo PC running Windows 10. I don’t know if anyone else has ran into this issue yet.
I had the same problem.
Ben, the developer of Akaizer, posted a solution in this thread: https://forum.renoise.com/t/new-tool-3-0-akaizer/42880
Simply download the main.lua and replace the one in the Tool folder.