I am having a lot of issues with S4S

I keep getting error messages like this 

Sims 4 Studio 1.3.1.5 (Apple Blossom)
S4Studio.Blender.Sims4StudioBlenderException: Exception of type 'S4Studio.Blender.Sims4StudioBlenderException' was thrown.
at S4Studio.Blender.BlenderUtilities.RunBlender (System.String script, System.String blend, System.Boolean background, System.Boolean check_version) [0x002c3] in /Users/a/thes4studio/TheS4Studio/S4Studio.Shared/BlenderUtilities.cs:232
at S4Studio.Blender.BlenderUtilities.ImportMlod (System.String fileName, System.String mlod, System.String rig, System.String state) [0x000a4] in /Users/a/thes4studio/TheS4Studio/S4Studio.Shared/BlenderUtilities.cs:483
at S4Studio.ViewModels.ObjectLodItem.ImportMesh (S4Studio.Blender.BlenderUtilities blender_util, System.String blender_path) [0x000e5] in /Users/a/thes4studio/TheS4Studio/S4Studio.Shared/ViewModels/BuildBuy/Objects/ObjectLodItem.cs:641
at S4Studio.ViewModels.ObjectLodItem+<>c__DisplayClass49_0.<ImportMesh>b__0 () [0x0000d] in /Users/a/thes4studio/TheS4Studio/S4Studio.Shared/ViewModels/BuildBuy/Objects/ObjectLodItem.cs:622
at S4S.UI.Core.S4SWindow+<>c__DisplayClass11_0.<BeginLoading>b__1 () [0x00016] in /Users/a/thes4studio/TheS4Studio/S4Studio.Mac/UI/Core/S4SWindow.cs:171

Also the program keeps crashing and will not let me rename objects. I tried posting in a different part of the forum but that did not seem active