I bought a 1 year licence for Vegas Pro just yesterday, and the first project I did worked
Now I'm trying a second project, but I have a showstopper of a problem - the video preview doesn't work for anything: my videos, VEGAS Hub, Media generator, subtitles, nothing gets displayed. The vegas hub clips don't even render, or the media generator objects, BUT, it does render my own video (from a sony ZV-1 in 1080 25fps) and get a nice video out of it. The audio works fine.
This is the source file I installed: VEGAS_Pro_220.127.116.11_DLV_DE-EN-FR-ES_221013_19-05_4F858A66.exe
What I tried (before returning them to their default values when they didn't work):
1.) Restarted my laptop (Thinkpad X13, 16GB RAM, Intel(R) UHD Graphics, Intel(R) Core(TM) i7-10510U @ 1.8GHz, 1TB SSD, 4K DELL monitor, Windows 10, all up to date with Microsoft)
2.) options - preferences - video - RAM Preview: 0
3.) options - preferences - video - GPU acceleration: OFF
4.) options - preferences - general - OpenCL/GL Interop: Unchecked
5.) options - preferences - deprecated features - Allow Legacy GPU Rendering: Checked
I could not do these because I couldn't find them (Internal tab now missing in v20 preferences)
6.) options - Shift-Click preferences - internal - OpenCL/GL Interop: FALSE
7.) options - Shift-Click preferences - internal - So4 Compound Reader: FALSE
8.) event fx - newblue effect - i - Disable GPU for all products: Checked
Hope someone can help over there.