I have experienced some issues with an error thrown by the World Editor in PTR 1.33 patch: invalid object id. This error happens sometimes with default HD units that have no counterparts in SD mode.
In the new editor under the PTR patch this error crashes the editor preventing the user from accessing the map that is plagued by it, and it could de facto break existing maps
Since the error is not always thrown (it is already thrown randomly in the 1.32 World Editor but in that case it doesn’t crash the editor), it’s very hard to prevent the issue from occurring and I personally recommend fixing this before shipping the editor in the 1.33 patch.
Some example of units that may cause this error are:
- Kelen the Seeker [Haah]
- Blood Wizard [nwzw]