There are two types of SiteXpress templates; V1 templates, which were introduced in the first release of the product, and V2 templates, which were introduced in this release. SiteXpress 2 was designed to allow design components to be interchangable with components from other templates, including those from V1 templates. This feature is supported for all design components except V1 header images. SiteXpress 2 renders V1 header images as background images; they cannot be changed or removed.
If you are using a V1 template and attempt to change one of its header images, the Change Header image tool will report that there are no header images available for the template. While you can choose a header image from another (V2) template (or one of your uploaded images), the image will be inserted over (i.e., on a higher layer than) the static V1 image. If the effect is not pleasing to you, you can choose to hide the V2 header image using the Page Properties tool, or switch to a V2 template
Note: Template type is indicated in the thumbnail caption for each template shown in the Change Template tool.