Geocortex Interface

When opening Geocortex Essentials the interface does not load properly, it looks as the screenshots below. What might be the issue here?

Any help is appreciated.

Hani,

/customer/servlet/servlet.FileDownload?file=00P6000000eltg4EAA

/customer/servlet/servlet.FileDownload?file=00P6000000em1QdEAI

/customer/servlet/servlet.FileDownload?file=00P6000000em1LxEAI