Topic: Absolute paths with the BASE tag
To make your generated pages work from various folders, your template pages (MPC Files) must use absolute paths to point at external items (images, css files etc).
When using the Mpc Online Editor, a "404" tool is available for finding non-absolute (relative) paths that require your attention.
An html "trick" allows the use of a BASE tag to make relative paths act like absolute paths. This "hides" relative paths from Mpc's 404 tool. So in order to make use of the 404 tool's scanning capability, you'll need to remove any <base> tag from your template pages.