Transmogrifier list not working?

So, I recently upgraded to Pro for my new campaign, and I'm trying to use the Transmogrifier so that I can import my bestiary from my previous game to this one, preferably so it's less work on my part to recreating them all individually. The problem is that the Transmogrifier list shows up blank every time I try to use it. I've attempted to access this thing over the last few days, and it has yet to work for me. Can anyone explain what I may be doing wrong? 

Do you have any browser addons running?&nbsp; Any anti-script type addon could be interfering with that running.&nbsp; Other than that, I have no idea.&nbsp; I'm sure a mod will be along shortly to get you to run through the "solving technical issues" list from the wiki.&nbsp; You might as well run through it and be that much farther along.&nbsp; <a href="https://wiki.roll20.net/Solving_Technical_Issues" rel="nofollow">https://wiki.roll20.net/Solving_Technical_Issues</a>

I admit that sometimes the Transmogrifier can take up to three attempts to finally "catch", like starting an old motorboat on a cold lake morning. I've never had it fail to resolve after three tries, though.