It looks like you've embedded PBTrace within your connectstring.
DBPARM=ConnectString='DSN=david_citadel; UID=GOC;PWD=<******>;PBTrace=0;CON=GlobCon'
Note that the single quote ending the ConnectString parameter doens't occur until after CON-GlobCon.
PBTrace needs to be a separate DBParm parameter, something along the lines of:
DBPARM=ConnectString='DSN=david_citadel; UID=GOC;PWD=<******>;CON=GlobCon',PBTrace=0