Steps to Reproduce:
Have latest version of Kleoptra and GpgOL installed
Have one certifciate to sign and encrypt with and one to sign and encrypt to,
preferably from two different CAs
Enable S/MIME in GpgOL
Write Mail to the recepient, where you have the public certificate and trustchain of
Try to send mail
Choose the desired certificate
-> Error, that the mail can't be signed/encrpyted, because there is no valid CRL
object