app won't open

my app is working. can’t figure out what happened. I copied it from our server to the local Macs and it always worked except for this one person. I used my thumb drive and now it works. Thanks for everyones help. I have noted the great suggestions. I hate it when things work and I don’t know how. Thanks again everyone.

Part of the quarantine thing. Some methods of transmission don’t put an app into quarantine.

Next time, provide more information. ie, the screenshot of the error dialog or it’s exact text because we’re all only guessing right now.