you are trying to install imagemagick? if you are referencing i think its step three where you provide the paths to all the applications that dolphin is going to be looking for, just check your server and make sure its not installed. you can login to CLI shell account and give the command which imagemagick, it should provide you with the path that its installed on. furthermore, you should be able to submit a ticket to support and ask them for the path of imagemagick. if its not installed which would see more seem rare these days, then request that support install it.

later,
DosDawg