Update signature fails

[fschmidt]

Whenever I try to update my signature, I get:

Invalid File

Typical modern broken software.

[fschmidt]

Still broken.

[ardianto]

Whenever I try to update my signature, I get:

Invalid File

Typical modern broken software.

Does your new signature contains link to other site?. Or just pure texts without link?.

[fschmidt]

Does your new signature contains link to other site?. Or just pure texts without link?.

I get the error even with trivial text like just "test".