The latest version of the mod is functional in version 3.2. Wonders appear to be buildable without any issue, and there are no problems with their GUI rendering.

First, some minor issues. Here's a few provinces with incorrect borders. Some stray pixels on the map stretch out the province names.

The "Naga" localisation is rendered incorrectly, displaying as all-caps.

I decided to play a Thracia game, but more severe issues lie here. For starters, instead of controlling Fiana province, the resistance controls the next province over from it. Leaf's army starts out on Fiana, despite not controlling it. The resistance is also open elective. More importantly, the flags setting off the resistance are not set correctly. A few months into the game, a random ruler spawns and seizes a random Thracian province. Leaf and Sety lose their titles of resistance leader and Magi Squad leader, replaced by generated rulers. The Leaf vs Blume war is ended inconclusively with an invalid CB, with no way to re-declare war without attacking the whole empire. (A side note, being tribal, Leaf can take concubines. However, "concubine" has been blanked out of the localisation, resulting in a command simply labelled "Take".
Trying a Galle run, the county conquests ran without any problems. When the time came to strike on the Gran Republic, the event following the war was bugged. A Kingdom of Gran is established for a day, before firing the event that's supposed to form the empire. Instead, the kingdom gets destroyed, no empire replaces it, and you fall back to duchy rank, with the former vassals of the republic independent. The Galle save is on this event.
I also tried a run at reviving the Lopt Empire, but one of the secret cult events crashes the game when hovering over its sole option. The province got the event before without the game crashing. See the numbered save file and play a few days and it should appear.
While I make this post, I'll ask a question: would there be any problem with me going through Jugdral and giving it a proper update for 3.x, making a submod if necessary? It has been a few patches since the last update.