Install & startup
The window opens blank/white. The WebView2 runtime is missing or broken. The installer normally installs it automatically; if it was removed later, the app shows a download hint — install the runtime from Microsoft's site and start VidVertex again.
SmartScreen blocks the installer. "More info" → "Run anyway". This appears for newly downloaded installers; when in doubt, re-download from the official site and try again.
Where is my data?
In the app's data folder (by default %LOCALAPPDATA%\VidVertex\data; Settings →
Preferences shows the current one). Stacks, brands, config, rendered files —
all normal files and folders.
Back up that one folder and you have backed up everything. Config files additionally keep rotating backups of themselves — Settings → Backups restores a single file without touching the rest.
I moved the data folder and nothing changed. The move takes effect on the next start — the running app keeps its folder so a render in progress can't end up split across two. Restart.
The app showed an error card. Something in the interface crashed; the card offers Copy details, Open log folder and Reload. The error is already in the log. Reload usually fixes it; if it repeats, send the copied details to bugs@vidvertex.com.