-copied sorry.
I was dealing with this all day today, it was fine when I went to bed yesterday and today same error constantly, only thing that changed was there was an update today, after 6 hours of playing with my file's, finally I deleted the zm_usermap.gsc, I put in and haven't touched since weeks ago. Removed it from my usermap/youmapname/zone_source/yourmapname. zone
scriptparsetree,scripts/zm/zm_usermap.gsc
but the only thing I touched in there was disabling dogs, perhaps something with the update changed that and it was conflicting without a linking error.
I hope I was understood that I removed the line scriptparsetree,scripts/zm/zm_usermap.gsc from within my zone file that I had put in manually before.
Not deleted my zone file lol.
If its something you never did, then this probably doesn't apply as you're issue.