WebPlus X7: X7 Will Not Open Web Page

I can open the program and select a number of pages to view in the 'tree view' section or from the right hand centre section.

There is one page though that the program will not open. If I select it, the program goes into 'not responding' mode and the processor starts working overtime.

I have tried re-setting WebPlus to no avail.

Can anyone assist please?