When connecting my R-2.15 client to IBM Netezza v7 (NZA 2.5.4) for the first time, I got the error above. Here was the connect call:
>nzConnectDSN("NZSQL") Error in odbcDriverConnect("DSN=VirtualNZ") : (converted from warning) [RODBC] ERROR: state HY000, code 45, message Error occurred while loading translation library
Check to make sure you are running the 64bit version of R client. Once I switched to that version the error went away. It might be that installing the 32bit Netezza ODBC driver resolves this also. In my case, I wasn’t interested in getting the 32bit client working.