hi friend! I am new to cms and new to silverstripe,, in search of cms soft wares i found that silverstripe is the one that i am looking and searching for,,, friends i have install silverstripe in my local host,,Xampp.. and i has installed fine and working fine.. i have also installed nivo-slider extension,,, its is showing in page type,,, i have install nivo slider according to the readme file of it,,but when inside the nivoslider main panel is not working that is when i click on panel and click on Add Nivo Slider Panel it shows the error that i have mentioned in my image file,,,below..thanks..please help me and guide me ,,,

I also am experiencing this issue after installing the latest from GITHUB. Any ideas on how to fix this issue? I am a brand new SilverStripe user and any input on this issue would be greatly appreciated.

Basically when attempting to add an image within the "Nivo-Slider" page receiving the following error code.

Fatal error: Class 'HTMLDropdownField' not found in webaddress/nivo-slider/code/NivoSliderPanel.php on line 28

This appears to be the suspect line of code:

public function getCMSFields_forPopup(){
$image=class_exists('ImageUploadField')?'ImageUploadField':'FileIFrameField';
$tree=class_exists('SimpleTreeDropdownField')?'SimpleTreeDropdownField':'HTMLDropdownField';

Thanks for the help!