Some of the users experince problem of "bad file". To fix that you will need to install the pdf viewer - Adobe Acrobat. Afterwards - clean the default settings of PDF openeing. [go to "settings" - "General" - "Applications" - open Google Drive than click "Default" and "clean defaults".
Get the installation package of Slichot 1.1 for free and check out users' reviews on Droid Informer. The app works flawlessly on Android 2.3.3 and higher. This application is completely safe to download. MicDev is the developer of the tool which can be found in the Lifestyle category.
Over 5K users set up Slichot and the most recent update was launched on Oct 19, 2014. According to the latest info, the app is rated 3.6 on Google Play.