I've finally figured out that the CBETA Lantsa font is what has been causing technical difficulties with turning visiblemantra.org into a book. For some reason it breaks the pdf creator and leaves me unable to create the files I need to publish. So I'm now in the process of turning all those mantras and bījas into images.
It's been two years since I made the decision to create the book. Each mantra will have four scripts: Siddhaṃ, Tibetan, Lantsa, and Devanāgarī. I had been using fonts for Lantsa as the calligraphy is too difficult for me. I have created all new calligraphy for it, of much higher quality than what is on the website.
It will take a few months to create all the new images and reconfigure the book. But this is the first progress I've made for some time. There is now a good prospect of getting the book out next year. Once the book is finished I will need to bring the website up to the same standard though I imagine it will be a long process.
In the meantime if you are interested my Pilgrimage Diary is available via Lulu.com.