Check that Unknown Sources is enabled. Open your Settings app, access Applications, and checkmark the option for “Unknown Sources”.

If you are receiving a Parsing Error, this means the application is not compatible and you should use and update your SlideME (SAM) app to ensure such applications are filtered out.
Note that the SlideME website does not filter applications for compatibility for you, only SAM does.

If your downloads remain Pending, please restart or reboot your device before downloading any further applications.

You may also try downloading the latest SlideME (SAM) app that is compatible for your device to see if this helps.