Cannot export ttf and otf at the same time

[Lisa_Schultz]

When I try to export otf, ttf and Webfonts at the same time into the same folder it gives me this error report:

But no instance will have the same file name since the suffix changes. (.otf, .ttf, .eot, .woff. woff2)

[GeorgSeifert]

I fixed that already.