Help Runtime Error while installing the update of app

[Boban (Boban Stojmenovic)]

Are you using custom package name if so

Problems with Activity Starter

when I tray to open a PDF file saved on the phone using Activity Starter, the system show that error: Runtime Error Attempt to invoke virtual method ‘android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager,java.lang.String)’ on a null object reference END APPLICATION

/Boban