I am not sure whether I am the only one see this error on our test cs10.5 with update3.
once I start the Oscript project from Eclipse
the content server is tracing on following ling
hash = Security.Hash( strKey, .fHashAlgorithm )
the fHashAlgorithm contains the value 3
the strKey contains a valid string: 2138465394CacheUtil
from my console: I got the error 16:44:28,906 ERROR LibOTSecBuiltins: Hash digest initialization failed for digestId: 3
and then CSIDE stopped at the MemcachedUtil.GetValue Line 73
I only got this error by running CSIDE, running normal services I do not see any tracefiles generated with this function.