Brandon, It is working for me just as you describe now. I don't know what was going on yesterday. This is a great feature, especially for larger documents. I may use it just to read epub documents efficiently. Thanks for everyone's hard work on this project. Best regards from Ohio, Vic From: brailleblaster-bounce@xxxxxxxxxxxxx [mailto:brailleblaster-bounce@xxxxxxxxxxxxx] On Behalf Of Brandon Roller Sent: Wednesday, January 15, 2014 9:02 AM To: brailleblaster@xxxxxxxxxxxxx Subject: [brailleblaster] Re: Book tree again The book tree shows headings. If there are no headings in your document, then only a single item will be in the tree, which is the title. I ran your file with the semantic file and two headings appeared. On Tue, Jan 14, 2014 at 5:56 PM, Vic Beckley <vic.beckley3@xxxxxxxxx> wrote: Keith, It was a very basic dtbook document. In fact, I will go ahead and attach it in case it is document specific. I will also attach the sem file with it in case that has some bearing. Sorry I wasn't very specific in my previous message. Best regards from Ohio, Vic -----Original Message----- From: brailleblaster-bounce@xxxxxxxxxxxxx [mailto:brailleblaster-bounce@xxxxxxxxxxxxx] On Behalf Of Keith Creasy Sent: Tuesday, January 14, 2014 4:30 PM To: brailleblaster@xxxxxxxxxxxxx Subject: [brailleblaster] Re: Book tree again Hey Vic. I'll let Brandon address this but you know that there is no such thing as a standard XML document", right? -----Original Message----- From: brailleblaster-bounce@xxxxxxxxxxxxx [mailto:brailleblaster-bounce@xxxxxxxxxxxxx] On Behalf Of Vic Beckley Sent: Tuesday, January 14, 2014 3:38 PM To: brailleblaster@xxxxxxxxxxxxx Subject: [brailleblaster] Book tree again OK, I figured out what this is and it is very cool. I guess it only works in epub documents. Is that correct? I tried epub and xml and it worked. The previous error happened when I tried to go to the book tree in a standard xml document. I didn't even get the treeview at all, just an edit box. Best regards from Ohio, Vic