Maya ARTv1 is not exporting and not importing

So, I’m using last art version from marketplace and freshly installed 4.16.3 Engine and Maya 2016. Once I followed the guide, the import and export of animation works fine, but when I’ve updated my 4.18 Engine the import and export to fbx stop working. (the 4.16.3 is still present on the system) there are errors when I try to export

`// Error: line 1: Cannot find procedure “FBXExportReferencedAssetsContent”. //

Error: RuntimeError: file C:/Program Files/Epic Games/UE_4.16/Engine/Plugins/Marketplace/ARTv1/MayaTools/General/Scripts/art_v1\ART_exportMotion.py line 867: Error occurred during execution of MEL script

line 1: line 1: Cannot find procedure “FBXExportReferencedAssetsContent”. #
[u’Mannequin:Mannequin_ExportRN’, u’Mannequin:sharedReferenceNode’, u’MannequinRN’]
Mannequin:Mannequin_Export`

And on importing

// Error: line 1: Cannot find procedure "FBXImportMode". // 
# Error: RuntimeError: file C:/Program Files/Epic Games/UE_4.16/Engine/Plugins/Marketplace/ARTv1/MayaTools/General/Scripts/art_v1\ART_importMotion.py line 941: Error occurred during execution of MEL script
line 1: line 1: Cannot find procedure "FBXImportMode". # 
[u'Mannequin:Mannequin_ExportRN', u'Mannequin:sharedReferenceNode', u'MannequinRN']
Mannequin:Mannequin_Export

I’ve tried to reinstall maya, art itself, and engine, but nothing helps

4.19.2 same problem~

Well , I ve found out the solution.It is because that the FBX plugin seems to be disabled.

So, you need to do the following things:
1.find setting under windows tab
2.open plugin management under setting
3.check the checkboxs to the rightside of fbxmaya then refresh
4.well,the problem is gone! go ahead to export your animation now!