I use WMM long time ago on Win 8. Currently I have a half ready project, I can't edit it anymore. Once I re-open it I can see a black screen on the left side and no elements on the right side. The movie is 8 mins long and I can start, also after 1 mins its shows the video but I the first 17 elements is not visible out of 79. Can you please help to fix the file? I tried everything but doesn't work still ...

https://1drv.ms/f/s!AjlztJJtcjyq3HhHQL3_2WZ78o_T

Thanks