ID 426007 - On Mac Mari crashes when adding a version to an object with a cached Bake Point.

Problem summary
Mari crashes when adding a version to an object with a cached Bake Point. This bug is specific to Mac.

Customer reported version
Mari_4.6v2

Customer reported platform
MacOS 10.13

Steps to reproduce

1) Open the Example Head Project. 

2) In the Node Graph put a Bake Point next to the Base Color Channel and bake it.

3) Add an object version to the head geometry by right-clicking>Add Version and upload an object file.

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4)  In the Object Palette within the Geometry subsection, use the Version dropdown to select the object file you just uploaded.  

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Result: Mari will crash.

Expected behaviour
The newly added object version should appear as an option in the Object palette > Version dropdown menu.

Actual behaviour
Mari will crash.

Workaround
Delete the cache for all Bake Point nodes, only required for the object you want to version up. 

Reproduced by support

This bug has been reproduced in:
Mari 4.6v2 - MacOS 10.14.6 - regression

Unable to reproduce bug in:
Mari 3.4v4 -MacOS 10.14.6
Mari 4.6v2 - Windows 10 - CentOS7

Earliest version tested
Mari 3.4v4 - This issue doesn't appear in this version and has regressed