Before using BCVTB for co-simulation of Matlab and energyplus, must I install Ptolemy 2? Or just installing BCVTB is enough (and Java as BCVTB required).

And When I install Ptolemy 2, there always is an error as the figure shown. Does this error influence the use of Ptolemy2? because I found there are some apps (.exe) of Ptolemy2 that have been installed successfully even after this error appears.

Thanks for any response.