I've installed DraftSight version 2017.1.0.2157 on Fedora LInux 25 (64-bit).  It installs OK and the activation worked.  However when launching the app it fails immediately as follows:

\\\$ ./DraftSight

Could not parse stylesheet of object 0x236fca0Could not parse stylesheet of object 0x236fca0

(DraftSight:3412): GLib-GObject-WARNING **: cannot register existing type 'GdkDisplayManager'

(DraftSight:3412): GLib-CRITICAL **: g_once_init_leave: assertion 'result != 0' failed

(DraftSight:3412): GLib-GObject-CRITICAL **: g_object_new: assertion 'G_TYPE_IS_OBJECT (object_type)' failed

\\\$

This happens consistently.