Hi, I also experienced this issue. I was able to download new plugins, but when i tried to download any new themes I got the following error: “Download failed. There are no HTTP transports available which can complete the requested request.”
I am using Apache2.4.1/mySql5.6.21/php5.6.2 served on my localhost.
Anyways, this appears to be a PHP error and I was able to fix the issue by modifying my php.ini file.
All of the help sites I went too said to uncomment the line: extension=php_curl.dll (this didn’t work)
What they forget to mention is that you also need to uncomment the line:
extension=php_openssl.dll
As soon as I uncommented this line I was able to download themes.
Don’t forget to save the file php.ini and restart your apache server after you make the change:)
Good luck.