[BanhVo]

Currently this editor has generated an unexpected error. I was looking for a way to fix this bug but no one was on the search. This error is very when click on add object number then hit 3749 then click on 19129 then it is most likely error it number 1 or 9 in front. Only fix this.
Picture 1 https://imgur.com/a/CIZ3a
Picture 2 https://imgur.com/a/dzcdX

[Sew_Sumi]

Verify your install. This seems like a local issue, more than a problem with the application itself.

[lenor]

Close any gtasa programs and delete gta_sa.set in My Documents/GTA San Andreas User Files.
Or what Sew_Sumi said.

[cuber]

It happened to me aswell, just ignore it or change it's run compatibility mode(these 2 worked for me).