Hello.
The picture in a resource of SliderExtender returns a strange MIME type ('img/gif').
You should correct with 'image/gif'.
In Internet Explorer, it can usually display normally.
However, when a server returns the following http header for the improvement in security, it cannot display.
"X-Content-Type-Options: nosniff"
* Since I cannot speak English, this text is machine translation.
The picture in a resource of SliderExtender returns a strange MIME type ('img/gif').
You should correct with 'image/gif'.
In Internet Explorer, it can usually display normally.
However, when a server returns the following http header for the improvement in security, it cannot display.
"X-Content-Type-Options: nosniff"
* Since I cannot speak English, this text is machine translation.