java.lang.NoClassDefFoundError: org.apache.harmony.xnet.provider.jsse.SSLParameters

SSL operations cause program crash.
Groundhog version: 1.20.3
Android version: 2.3.4
Software Number: 3.20.557.2 710RD (Firmware version?)
Phone: HTC Merge

Crash dump follows:

06-28 12:58:27.275 E/AndroidRuntime(21615): Caused by: java.lang.NoClassDefFoundError: org.apache.harmony.xnet.provider.jsse.SSLParameters

06-28 12:58:27.275 E/AndroidRuntime(21615): at com.almarsoft.GroundhogReader.lib.TrustManagerFactory.get(TrustManagerFactory.java:132)

06-28 12:58:27.275 E/AndroidRuntime(21615): at com.almarsoft.GroundhogReader.lib.ServerManager.connect(ServerManager.java:152)

06-28 12:58:27.275 E/AndroidRuntime(21615): at com.almarsoft.GroundhogReader.lib.ServerManager.clientConnectIfNot(ServerManager.java:109)

06-28 12:58:27.275 E/AndroidRuntime(21615): at com.almarsoft.GroundhogReader.lib.ServerManager.selectGroupAndGetArticleNumbers(ServerManager.java:273)

06-28 12:58:27.275 E/AndroidRuntime(21615): at com.almarsoft.GroundhogReader.lib.ServerMessageGetter$ServerMessageGetterTask.doInBackground(ServerMessageGetter.java:154)

06-28 12:58:27.275 E/AndroidRuntime(21615): at com.almarsoft.GroundhogReader.lib.ServerMessageGetter$ServerMessageGetterTask.doInBackground(ServerMessageGetter.java:1)

06-28 12:58:27.275 E/AndroidRuntime(21615): at android.os.AsyncTask$2.call(AsyncTask.java:185)

06-28 12:58:27.275 E/AndroidRuntime(21615): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306)

06-28 12:58:27.275 E/AndroidRuntime(21615): ... 4 more

06-28 12:58:27.295 W/ActivityManager(27192): Force finishing activity com.almarsoft.GroundhogReader/.GroupListActivity

06-28 12:58:31.789 W/InputManagerService(27192): [unbindCurrentClientLocked] Disable input method client.

06-28 12:58:31.789 W/InputManagerService(27192): [startInputLocked] Enable input method client.

06-28 12:58:31.849 I/ActivityManager(27192): Process com.almarsoft.GroundhogReader (pid 21615) has died.