I’m using 4.9.2 and Blender version 2.76b. I’m exporting an .fbx file and opening it in the standalone ClothingToolCHECKED.exe (physx ver. 3.3), and from there compute the tangents and save as an .apx file. Using one bone it works fine, but as soon as you use two or more bones you get the following…

I was suffering from the same message. but I resolved it. The cause of this error is Boneweight datatype. UE importer accepts .apxfile that has float1 or float4 boneweight. float2 or float3 boneweight causes this error. This datatype depends on the vertex affected by a largest number of bones . …

Apex cloth, 1 bone works but 2+ doesn't

Development World Creation

Tim_Hobson (Tim_Hobson) March 23, 2016, 12:57pm 4

Unfortunately, there is not update at this time regarding UE-24991.