I bought version 1.5 and it worked great, also used the maintainence feature. All versions since then have not worked in some way. Not creating a dmg file, or total removal of the maintainence feature. Developer will not answer any email, about any one thing, but, they love accepting your money. Have emailed about the loss of the Maintainence feature, and DMG file creation death, no answers. Using Tiger 10.4.10