DomainKeys? See http://domainkeys.sourceforge.net/
Alpine 2.00 (LNX 1167 2008-08-23)
If a component cannot be found it currently generates an assertion failure
in SCH_REFERENCE::SCH_REFERENCE. It gets called by
SCH_SHEET_PATH::GetComponents with part==NULL.
It seems to work fine on continue so maybe that assertion shouldn't check
for the part to non-null?
(I came across this issue because I had a component with '/' in the name,
renaming to use _ now)