while enabling EHCache on contact search drop downs and got below error. After googling got to know the bug is due to EHCache compatibility with Liferay EE 6.2 due to class loading issue.
Caused by: net.sf.ehcache.CacheException: Unable to load class net.sf.ehcache.store.DefaultElementValueComparator. Initial cause was net.sf.ehcache.store.DefaultElementValueComparator.<init>(net.sf.ehcache.config.CacheConfiguration)
if some body has come across this kind of issue, please let me know with a solution..