Generating parts doesn't show the tab

I added the instrument to an existing full orchestra score I created (and actually thought was finished until we decided to add Timpani this morning), but I could not add the dynamically linked chart for the part. Software would act like it was trying as the page would "glitch" but the part tab wouldn't show up. Neither of the workarounds I found in the forum worked. Since I had already created my line and page breaks for all parts, I didn't want to have to redo that when creating new parts.

WORKAROUND: I was able to "New All" (File>Parts) and then delete all of the new parts created (second set in the list) except the actual new Timpani part I needed to add. I was then able to move Timpani up above the Strings/Rhythm and Choir charts.

I use MuseScore 2.0 on a Mac. This was my first score EVER! Thankful for you and your very easy to learn software!