Hi Igor,
I am currently working on my Mac in the latest beta of version 12 and have come across a problem that I have managed to resolve. I have all my images etc and project files saved in a folder that ends with a ? mark The folder is named How do you like your steak? Images, audio file and the project files can be opened from this folder and I can create a Show for Mac. However, if I try and publish as video file .mp4 I cannot do so. I have changed the name of the folder so that it no longer contains the ? mark and now all is well. The solution is not to have folders named with the ? mark but thought I would pass this on.
Thank you for your continued work in progressing PTE AV Studio, it is appreciated.