I have tried to make at least two threads in apprentice tokers dozens of times and it always leads to a blank page. It's kind of pissing me off.
The "white page" error, is an error a lot of users get, Make sure the thread and the title are not too long, and you didn't copy/paste something large. Try putting a "." as your title, and even something such as "Hello" as the text (so to satisfy the length requirement) This should help you no longer get "white paged". Once you have a post up, simply edit the post, go advanced so you can edit the title, then replace what you previously has with what you originally wanted to be posted. If I'm correct that's an error that has affected a lot of users, and should be fixed with the next update. Hope this has helped.