Detailed Description of the Problem   Only appears to have recently started happening where inserted images have boxes of blank space/corrupted zones or are duplicated many times at close maginifications (indcated with red arrows). Don't think it's my graphics card as nothing else appears to be affected.  Restarted the browser (google Chrome) deleted the cache as suggested and I am using windows 7  Oh also, just checked, campaigns that were working fine for the last year have the same graphical bugs where none were present when I was running them so it's not that the images are in themselves flawed in some way.