Open type problem - Red Traiangle

Hello,

I am a newby on this forum.
Just made a new font and have no problems with the .ttf format, but when i will save the file as .ttf/.otf (All Files) something is going wrong.
See attachment. In the .ttf name you see nothing and in the .otf version there is a red triangle in the left corner of the file name…
Does somebody nows what this means? Or what could be wrong?

Best & Thanks for help!

Coert
Red_Triangle.jpg

All the red warning triangle means is that the font has been modified in some way since opening it. If you try to close it you will be asked if you wish to save the project file.

I see this with fonts such as League Gothic where there is no GSUB table.

This is by no means an error, just a reminder that the font project has been changed.

It means something within your font project has changed. In this case the Export Settings changed as you provided an Output File.