Hi, I receive the following error when I try to install cluserSim package on Sparc Solaris 10 using Sun Studio 12: I have compiled and installed a 64 bit version of R. CC -xtarget=native64 -I/opt/R-2.8.1/lib/R/include -I/opt/SUNWhpc/HPC8.1/sun/include -I/usr/sfw/include -I/opt/csw/include -KPIC -O -c clusterSim.cpp -o clusterSim.o "clusterSim.cpp", line 14: Error: An integer constant expression is required within the array subscript operator. 1 Error(s) detected. *** Error code 1 make: Fatal error: Command failed for target `clusterSim.o' I would appreciate it if you could share your experience with me. Thanks -- Mohammad Nikseresht