Cannot launch picoe/eto application on Mac OSX

Question

Currently I'm developing an application for both Windows and MacOS. Created a template application for MacOS (10.13.4) using Eto.Platform.Mac64 (2.4.1) nuget package. The application is built for Release build. The problem occurs when trying to launch the .app bundle.

Currently tried:

• Opening the bundle using: open -a xxx.app. I got an error -54
• using: sudo open -a xxx.app. The error is -10810
• Giving all permissions for files inside for execution.
• Disabling GateKeeper
• Trying to launch the executable directly using mono, although the ETO platform checks if it's launched from .app bundle, and fails there
• Launching the .app from /usr/local/bin
• Launching the .app from ~/Applications/
• Building Eto.Forms for MacOS separately.

Everything seems to point to permissions issue, but I can't seem to understand what am I missing. Since I'm new with MacOS in general (mostly familiar with linux), any suggestions/help is greatly appreciated.

Answer 1

After checking the Console.app for logs I found out that com.apple.quarantine had marked the application as quarantined.
After xattr -d com.apple.quarantine MyApp.Mac.App/Contents/MacOS/MyApp.Mac
Everything works perfectly.
Thank you Curtis for your suggestions.