No. Currently there is no Mac version of Photo Slideshow Maker yet.
Yes. Photo Slideshow Maker is compatible with Windows 7, Vista and Windows XP.
In the matter of fact, the trial version and full version are the same program file. Once you register the trial version with the license key, you get the full version.
First of all, please check if your computer system allows you to install Photo Slideshow Maker. The program currently does not run in Mac computers.
Second, check if the setup of Photo Slideshow Maker was mistakenly blocked by your anti-virus software. Turn off the anti-virus program during the installation process to have a try.
The last possible is that the setup file was broken during the downloading, you may download it once again from our website.
All updates are free. You can update your Photo Slideshow Maker whenever there is new version available.
To check if you are running the latest version of Photo Slideshow Maker, click the Help menu, and the click Check for New Versions.
You should close Photo Slideshow Maker during updating. It's suggested that you install the new version to the same directory as the old version, or you have to register the program after upgrade installation using the same license key as the old one.
We constantly make major or minor updates to Photo Slideshow Maker with improvements based on the feedback from our users like you. If you feel the current version you are using is OK, you can ignore the updates and continue to go with it. Downloading setup program of large file size could be time-consumeing, anyway.