I have Detailing Symbol Styles created in a DGNLIB and have specified that DGNLIB correctly in MS_DGNLIBLIST, but when launch OpenRoads and attempt to use a Detailing Symbol Style, the list is blank.
The best way to guarantee that your desired Detailing Symbol Styles are available in your workspace is to use the MS_DGNLIBLIST_DETAILINGSYMBOLSTYLES to specifically define the DGNLIB which contains your Detailing Symbol Styles.
The unexpected blank list of Detailing Symbol Styles can be caused if there are any DGNLIBs defined in the MS_DGNLIBLIST_DRAWINGSEEDS variable.
Here is the process that the program uses to load Detailing Symbol Styles:
Since the program checks for DGNLIBs in the MS_DGNLIBLIST_DRAWINGSEEDS variable before the MS_DGNLIBLIST variable when loading Detailing Symbol Styles, it will present an empty list of Detailing Symbol Styles if there are none defined in the MS_DGNLIBLIST_DRAWINGSEEDS libraries.