-parallel usage in command line interface yielding unexpected results

Whenever I run the command **molvec -dir path -parallel n** with n > 1, I get output which resembles the following in the MOL files for each of the images in the path: gov.nih.ncats.molvec.MolvecOptions$Result@7523478

However, when n = 1 (or if I omit -parallel entirely), I get the results which were expected. Any ideas why this is happening?