Modelsim compiling error:(vcom-11) Could not find work.stratixiv_hssi_components

I had the same error. I modified my .do file to compile the files into work:
vlib work
vmap work work
vcom -93 -quiet -work work \
$env(QUARTUS_ROOTDIR)/eda/sim_lib/stratixiv_hssi_components.vhd \
$env(QUARTUS_ROOTDIR)/eda/sim_lib/stratixiv_hssi_atoms.vhd

and then I located the vhdl file where the error is occurring

and changed

library stratixiv_hssi;
use stratixiv_hssi.stratixiv_hssi_components.all;

to

library work;
use work.stratixiv_hssi_components.all;

this is what I did!