cshrc should use this style
setenv LD_LIBRARY_PATH "${LDV_ROOT}/tools/lib{LDV_ROOT}/tools/verilog/lib{LDV_ROOT}/tools/simvision/lib{LDV_ROOT}/tools/inca/lib:${CDS_ROOT}/tools/lib"
setenv PATH "${LDV_ROOT}/tools/bin:${LDV_ROOT}/tools/dfII/bin:${LDV_ROOT}/tools/verilog/bin:{LDV_ROOT}/tools/simvision/bin:${PATH}"