What she said made made the staff worried:
(About wearing contacts since middle school) "At first, the doctor threatened me that 'it's like putting dirt into your eyes' so I had a negative impression of it from the start. But after wearing them, they were actually pretty comfortable."
This could have also been heard as "this sponsor's contact lenses are like dirt" to less informed people.
Ai was also asked by the host about her promotional video being shown on the maker's website, to which she replied:
"I don't remember it at all."
The host followed it up with: "The song was very impressive", to which she responded: "I didn't sing. I tried to but I didn't. Everything was just lines that I recited".
The host once again followed up with: "The clip was very heart-warming" to which Ai responded: "I just wanted to keep acting like this cute doll, so I kept doing what I had to".
The press who covered the event didn't like what they saw.
"She's got a huge ego and her reputation within the press is terrible. There was even a journalist who muttered, 'What's up with that lass?'." But it looked like the sponsor representatives were less than amused at how she ruined the promotional event by saying, "It's like putting dirt in your eyes". It's just natural that they'd get offended.
Source:
http://image.news.livedoor.com/newsimage/e/8/e88c6_1223_news_2013_07_04_050_index.iapp.jpg
