Basic XHTML compliancy appears to be missing. E.g. On images, no Alt tag (as described above), no height attribute, no closing of the image element. In Dreamweaver this is automatic.

XHTML compliancy with Cute Editor – Minimal

<img src="/Uploads/test.jpg" width="80">

XHTML compliancy with Dreamweaver – Fully compliant without need to amend code

<img src="/Uploads/test.jpg" alt="my test" width="80" height="529">

Flash object inserted through Cute Editor – Non XHTML complian

Flash object coded in Dreamweaver – Fully XHTML compliant