Some of Muslim Pro users are getting a "Package File is Invalid" error pop-up when trying to download Muslim Pro from the Google Play store. You can try to use the following methods to solve the issue.

Method 1: Do not use WiFi to download the app 

1. Turn off the wifi on your device.
2. Connect to the Internet with your 3G, 4G or LTE mobile data connection.
3. Relaunch Google Play and install or update the Muslim Pro app again.

Method 2: Install the app from the Google Play Store website

1. Open the Internet web browser on your mobile.
2. Go to the Muslim Pro Google Play Store page.
3. Install or update the Muslim Pro app again from the Google Play Store website

Method 3: Clear your Google Play's data and cache

1. Go your device's Settings menu.
2. Go to Applications (may also be labeled Application Manager).
3. Tab over to All Applications.
4. Open the Google Play Store app.
5. Tap on Clear Data and Clear Cache.
6. Relaunch Google Play and install or update the Muslim Pro app again.

Method 4: Uninstall Google Play Store updates

1. Go your device's Settings menu.
2. Go to Applications (may also be labeled Application Manager).
3. Tab over to All Applications.
4. Open the Google Play Store app.
5. Tap on Uninstall Updates.
6. Relaunch Google Play and install or update the Muslim Pro app again.

Method 5: Clear your Google Service Framework's data and cache

1. Repeat all the steps for Method 3 for The Google Play Store.
2. Repeat all the steps for Method 3 for The Google Service Framework app.
3. Logout of your Google account on the Play Store, Log in back.
4. Reboot your device.
5. Relaunch Google Play and install or update the Muslim Pro app again.