"Download job" errors in RTC client

Using RSA Designer V901 and RTC V602.  Started getting these errors when loading components:

[From .log in Eclipse Workspace]

!MESSAGE An internal error occurred during: "Download job"
java.lang.LinkageError: loading constraint violation when resolving method "com/ibm/tema/repostiry/transport/client/RequestResponsePair.<init>
loader EquinoxClassLoader of class "BasicVersionedContentManager" and loader EquinoxClassLoader of class "RequestResponsePair" have different types for the method signature.


We just upgraded to TLS V1.2 recently so I suspect this is a result of that.  The components appear to load OK though.  Haven't confirmed that all the files are there - but they appear to be.

Anyone seen this issue before?

Thanks,
Fran