Hi jo,

Here is the solution of your problem:
- Open your drawing use STYLE command to open Text Style dialog box
- Rename text style STYLE1 to something different, for example to STYLE-1
- Apply changes with Apply button
- Use + button to create new text style

It appears there is a bug in AutoCAD for Mac which prevents from creating new text style via Text Style dialog if one of the existinf text styles has the name STYLE1

Maxim