I have a weird error. I have a site using HasManyDOM to hold testimonials for a page. The Testimonial class has two HTML fields using SimpleHTMLEditorField in the popup. This works fine in all standard browsers on my computer (IE6+, FF, Opera, Chrome, Safari) and my colleagues computer. However, on the client's computer the SimpleHTMLEditorFields are not appearing in the popup although the popup appears and the other fields appear. The popup functionality in all other respects is fine. A new testimonial can be created but with no way to edit the two HTML text fields. This behaviour is the same across all browsers on the client's machine (tried with IE8 and FF3.8)
I'm stumped as to possible cause. I suspect it's something locally on the client's machine but I can't seem to find anything that stands out as a cause.
Does anyone have a suggestion?