Hey!

I have a bit of a complex problem that I can't find a solution anywhere.
A few days ago I switched from Windows 7 to Windows 10. Now for the first time I launched my Vegas Pro 14.0 (Build 161) 64-bit.
Unfortunately, whenever I try to add any file to mount, this error pops up:

I tried to rename the file "compoundplug.dll" to ""compoundplug.dll.old" and also to copy the file to the desktop.
With both of these methods, the first problem disappears, I can add files to the program without the above error, however, another one appears.

MTS files (on which I have always been working) are "scrapped", Vegas sees only the audio track, the video no longer.
I can't deal with this, and I don't want to waste my time converting all files to a different format, especially since many people work on MTS files and everything works.

Any ideas?
Thank you in advance for your help.