We uploaded our new logo to the /certificate/pix/seals directory and then updated the certificate to use that logo.
However now, whenever we try to view the certificate generated, we get this message and the certificate is not displayed:
FPDF error: Alpha channel not supported:
Any ideas on what is causing this? This new logo is also in the png format and it is just slightly wider (but has the same height) as the default Logo.png file.