ID 273075 - If you add the Slack operation through the Deformers tab when the locators are added the mesh disappears.

Problem summary
If you add the Slack operation through the Deformers tab when the locators are added the mesh disappears.

Customer reported version
Modo 13.1v1

Customer reported platform
Windows 10

Steps to reproduce

1) Create a simple cylinder.

2) Create two locators and put them either side of the cylinder.

3) Select the Mesh and navigate to the Deformers tab.

4) Select the Slack mesh deformer.

5) Select the two locators and navigate to the Groups tab.

6) Right-click the Slack Effector group and select Add Items, notice that the mesh disappears.

Expected behaviour
It should apply the slack effect to the mesh.

Actual behaviour
The mesh disappears.

Workaround
Instead of adding the Slack Meshop through the Deformer tab, within the Items list right-click the mesh and select Add Mesh Operation and select Slack.

Reproduced by support

This bug has been reproduced in:

13.1v1 - Windows 10 - Centos 7 - MacOS 10.13

13.0v1 - Windows 10 

12.2v2 - Windows 10 

12.1v2 - Windows 10 

12.0v1 - Windows 10 

11.2v3 - Windows 10 

11.1v1 - Windows 10 

11.0v3 - Windows 10 

10.2v4 - Windows 10 - Centos 7 - MacOS 10.13

Earliest version tested

10.2v4 - This issue appears to be in all versions of the product.