If you look at the log example in the blog, it is downloading every hour, like clockwork. So I don’t think that explains it.
I have seen tables plans done in PerfectTablePlan with Chinese characters. So it is doable.
Localizing PerfectTablePlan would be a big job. >100 KLOC (lots of GUI), 200 pages of documentation and a sizeable website. Also people would probably expect me to do tech support in Chinese. And I’m not sure Chinese people have really got the hang of paying for software! Currently I have sold the same number of licences to China (pop 1.35 billion) as I have to Monaco (pop 36,000).
If I was going to localize it, I would do French and German first.