Probably DLLs that are not registered. You should cleanly install Cassandra and java... and then copy your keyspaces (...\cassandra\data contents)
- Fatal Java error when starting cassandra Manu Chadha
- RE: Fatal Java error when starting cassandra Regis Le Bretonnic
- RE: Fatal Java error when starting cassandra Manu Chadha
- Re: Fatal Java error when starting cassand... Kane Wilson
- Re: Fatal Java error when starting cassandra Bowen Song