Hi useRs, I would like to know how to run two versions of Rserve on a Linux system. I am using the old JRE client of Rserve which requires me to use Rserve version 0.4-3. I am also using the new REngine API to connect to Rserve version 0.6. I would like to run both these Rserve versions on a Linux system. Is it necessary that I install two versions of R, and install these two Rserve versions in each R installation? I am aware that one can use multiple config files and provide different port numbers, but that would run the same version of Rserve with different settings. - Install the two Rserve versions in the same R installation. Must I provide an alternate library location for the other Rserve version to be installed into? - Install two R versions and install the two Rserve versions in each R installation? Any help in this regard will be much appreciated. Thanks Harsh Singhal [[alternative HTML version deleted]]