testing v6-1-5, cannot parse Fortify .fpr files

I have tried parsing several Fortify .fpr files.  All attempts have failed.  I've attached the error log file for your review.
The .fpr files are from Fortify v 4.2.  
[V6Log.txt](https://github.com/Vulnerator/Vulnerator/files/684987/V6Log.txt)
