Steve

I dont know what to tell you

For me it is very hard to import any type of file
As I said , I am not the only one to face this problem, go through their forum

I must admit that it may depend on the settings
Recently,a member explained how to upload an .x file exported from Fragmotion
I will give it a try
In my case Fragmotion alwayes crashes the system

In any case maybe the import module is not so bad as I think but for sure it is quite fragile

I have never had a problem with 3dgs , using the same models