Maybe the same happened in TrainMaster with the Paper Mill as well. In the freelance base test map that I use for improving the production chains of TrainMaster, the Paper Mill has failed to appear till yesterday, when I substituted its BTY with the out-of-the-box version. Thus, the issue is fixed.
Has anyone verified this? Is the Paper Mill seeded as expected in the unmodified TrainMaster distribution? Are there more similar faults lurking inside it?