Hi Limei,
All the old VWks 11 symbol doors and windows are fine in 12. Why not just stay with these until they get the gremlins fixed? For scheduling you can create a report to get a list of symbols. You do need to be careful to avoid duplication as before. I paste XCENTER and YCENTER functions into my report, export to Excel, sort by X and Y; flag up if consecutive symbols have identical values, go back and locate these in VWks, correct as necessary, do the rest in Excel.
The new schedules only seem to work if the doors and windows have been kept as individuals and thus all the benefits of symbols ("only draw it once") are no longer available.
Power users may disagree? Am on Mac OS 10.3.9...