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This is a sub-class of the LinkageError class and indicates that the JVM cannot find an appropriate native-language definition of a method declared as native. Install the CDF Software Distribution on your system.
This happens sometimes when Android fails to load the necessary libraries when you install an app. Try reinstalling it or telling your client to reinstall it, as it seems to correctly install the libraries and fixes the problem.
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java.lang.UnsatisfiedLinkError: no curljava in java.library.path