If you're receiving an error in the terminal that might look something like this:
Exception in thread 'Thread-1' java.lang.UnsupportedClassVersionError: com/acrolinx/acrocheck/client/batchclient/Main : Unsupported major.minor version
It could be that your environment requires an update to the latest supported Java version (System Preferences > Java > Update). Or you might need to install an Oracle Java Development Kit. To download and install a compatible JDK, please follow this link to the Oracle download page.