The download wasn’t the store’s installer
Something changed it on the way, often a Wi-Fi sign-in page. Try again, or on another network.
What happened
Malbec checks that a download is the installer it asked for before it runs anything. This one wasn’t: something on the network replaced it, often a Wi-Fi sign-in page in a hotel, a café or an office.
The fix
If your browser shows a Wi-Fi sign-in page, sign in there. Then click Try Again, or try another network.
When to write to us
If it happens on your home network, write to us.
Email support@malbec.app. For a diagnostics file, choose Help › Export Diagnostics… in Malbec and attach the zip it saves. It has no account details, and your home folder is masked.