Custom Skin can't be loaded with correct size

Hi there,

since the new hotfix i can not upload my custom skinfile i use since a few years. When going to the dressing room - Classic Skins - Owned Skins - Button "Choose new Skin" and choosing the skin from my device it shows the message that the file has to be in the correct size. The skin file has a size of 64x64 and worked always like a charm.