Nobody can tell you anything without proper system information and other details like what Internet connection you actually use...
Hi Mylenium , thanks for your reply.
I give you screenshot about what happend to my photoshop, kuler plugin said so, but if i open blendmein plugin it only show white blank in the plugin.
for my internet connection I'm using adsl cable modem and wifi router. same connection that I used to use.
i'm using ASUS A46CB, core i5, 4gb ram, nvidia gforce 740m and windows 8.1 pro. I really frustrated because of this.
I had the same problem in Photoshop CS6 and someone on another thread said to do this in Photoshop: Edit > Preferances > Plug-Ins > Plug-Ins >Allow Extensions to Connect To The Internet.
This worked for me.