Access violation when assigning a changed bitmap to a VCL style

Question

Delphi XE7 Bitmap Style Designer: When I change an exported bitmap of a Delphi Visual Style (eg 'Auric') I get an access violation after importing the png back and try to assign colors. Any ideas?

Answer 1

You are probably importing image in following way:

Images -> style.png -> Delete -> Add -> Style Assign Colors -> AV

Instead do:

Images -> style.png -> Update -> Style Assign Colors

Answer 2

It seems that one have to edit the png image with Photoshop or Gimp which supports transparency. If I changed the colors in a simple bitmap editor like Paint, the above problems appears.