What am I doing wrong? 
I posted three links to Litecigusa and madvapes earlier today and for some reason when I try to open them, I get this message:
However, when I go to Edit Post -> Go Advanced-> Preview Changes/Preview Post, the links work like a charm and open to correct vendors' sites and items I had linked. I tried logging out and back in, I restarted my computer--nothing helps.
Thanks...

I posted three links to Litecigusa and madvapes earlier today and for some reason when I try to open them, I get this message:
Oh Dear...
Error 404: Page Not Found
However, when I go to Edit Post -> Go Advanced-> Preview Changes/Preview Post, the links work like a charm and open to correct vendors' sites and items I had linked. I tried logging out and back in, I restarted my computer--nothing helps.
Or get a simple wall wart to use with your USB chargers. I've had one for years and used it without any problems:
AC Wall to USB Adaptor
Joyetech AC to USB Adaptor
Those come with .5A output.
Even cheaper here:
500mAh AC to USB Adapter
Thanks...