According to the Bee Docs’ Blog, Bee Docs’ Timeline was recently updated to version 1.3. This version “fixes a rare but pesky bug that causes the foundation date labels to disappear during certain date ranges”.
Bee Docs’ Timeline is timeline charting software for Mac OS X, and you can download it here. It features an automatic layout capability, can output to a variety of formats, and can span up to 10 pages of any-size paper.