Preview button not working - increasing problem?

[matesic]

Hi - this issue cropped up on another web forum yesterday and seems to be an increasing problem for many IMSLP users
https://www.violinist.com/discussion/th ... ?page=5431
My own 5-minute in-depth experience is that the button works on less than 10% of files. I wonder if violinist.com contributor Han Jin is on the right track?
Many thanks
Matesic