After installing JBT 4.2.2, seeing non-fatal class cast exception when starting eclipse

See the attached log file for this exception:

java.lang.ClassCastException: org.eclipse.osgi.internal.framework.EquinoxConfiguration$1 cannot be cast to java.lang.String
at org.eclipse.m2e.logback.configuration.LogHelper.logJavaProperties(LogHelper.java:26)
at org.eclipse.m2e.logback.configuration.LogPlugin.loadConfiguration(LogPlugin.java:189)
at org.eclipse.m2e.logback.configuration.LogPlugin.configureLogback(LogPlugin.java:144)
at org.eclipse.m2e.logback.configuration.LogPlugin.access$2(LogPlugin.java:107)
at org.eclipse.m2e.logback.configuration.LogPlugin$1.run(LogPlugin.java:62)
at java.util.TimerThread.mainLoop(Timer.java:555)
at java.util.TimerThread.run(Timer.java:505)
ipse.m2e.logback.configuration.LogHelper.logJavaProperties(LogHelper.java:26)
at org.eclipse.m2e.logback.configuration.LogPlugin.loadConfiguration(LogPlugin.java:189)
at org.eclipse.m2e.logback.configuration.LogPlugin.configureLogback(LogPlugin.java:144)
at org.ecl