If the newer VP won't play the files, share a few for examination...
Upload the file/s to a free server, such as Google Drive or MS OneDrive, right-click the link and Share or Copy. Copy the result and paste it here or to me in a Private Message via the mail envelope in the top-right corner of this forum. When using Google Drive, click SHARE | SHARE and change "restricted" to "anyone with link can view.**
If instead a project won't load with the newer release, reinstall the earlier one and load it there. Once it's fully loaded, follow these steps, one-by-one. Don't skip any.
Someone will look into the issue.
- Back up --- With your project on the timeline, click on MENU at the top-left. Click FILE|BACK UP PROJECT FILES TO FOLDER. Choose a folder and SELECT FOLDER.
- Zip the folder --- It will be numbered. In Windows right-click on it and Send To > Compressed (zipped) folder.
- Upload --- Use a free server - Google Drive, MS OneDrive, etc. - to upload the zipped folder. When it completes...
- Get link --- Right-click the file and click SHARE. If using Google, right-click the file, click SHARE | SHARE. Change "restricted" to "anyone ... can view"
- Share --- Click COPY LINK or OK | DONE. Paste that link here, or click the folder at the top-right of this forum to message it privately. It won't be shared.