Upload file Failure

Dear Formlab Technicians,
I really need help, I have tried and tried again to upload my file. But still, the file upload process is failure. This time, Perform 1.9.0 just simply stops in the middle of uploading? My Task manager shows that Preform has no action as shown below.


I have tried to downgrade to 1.8.2, the file upload still not working.
Then I start to doubt if my obj file is corrupted, so I do the remesh and mesh simplification, and etc. No error is detect in Preform and all other 3D softwares.
After all the trials, it still not working, is it due to my Form1+ broken?
Really need helps. Thanks.
Yours,
Cheuk