Please do this:
- File > Preferences > Verbose upload during: > compilation(check)
- Verbose upload during: > upload(check)
- Click the "OK" button
- Sketch > Upload
- After the upload fails you will see a button on the right side of the orange bar "Copy error message". Click that button.
- Paste the error messages here using code tags(</> button on the toolbar). If the forum doesn't allow it because it's too long then attach it as a text file. This is better than pastebin because it's easier for other forum users to take a look. We can use all the help we can get, right?