V10.4.4756 disregards HTML Format and converts all email (Saved to Draft or Sent) to Plain Text. Reads received HTML Format email okay.
V10.4.4195 works fine.
Downloaded V10.4.4756 again and tried Repair. No joy. Error message: File ‘filOTMt4Wj.G..U5PRs.PBUTYhHA5cw’ cannot be installed because the file cannot be found in cabinet file ‘MailClient.cab’.
Downloaded and installed latest V10.4.4842.0. Installed okay. No error message. Same issue still exists. Italic and strike through still convert to Plain Text (no Italic, no strike through). Ran Repair. No joy. New Mail Compose and Reply still set to HTML.