**System Information**
Operating system: Darwin-17.7.0-x86_64-i386-64bit 64 Bits - macOS High Sierra 10.13.6
Graphics card: AMD Radeon HD 6970M OpenGL Engine ATI Technologies Inc. 4.1 ATI-1.68.24
**Blender Version**
Broken: version: 2.82 (sub 3), branch: master, commit date: 2019-11-30 17:33, hash: `rBf1ac64921b49`
Worked: (optional)
**Addon Information**
Name: Bsurfaces GPL Edition (1, 7, 5)
Author: Eclectiel, Vladimir Spivak (cwolf3d)
**Short description of error**
When I run Blender it appears this error message in Console:
```
ValueError: bpy_struct "GPENCIL_OT_surfsk_init" doesn't support datablock properties
ValueError: bpy_struct "GPENCIL_OT_surfsk_add_modifiers" doesn't support datablock properties
```
**Exact steps for others to reproduce the error**
1. Run Blender and open User Preferences, go to Add-ons tab.
2. Activate Bsurfaces GPL Edition (1, 7, 5) and Save Preferences.
3. Close Blender and open it through Console.
4. See the Console
[Based on the default startup or an attached .blend file (as simple as possible)]