I had this problem…. I assume like me you have not used the quickstart method to build our site (I tried this twice and gave up it’s a nightmare)
So If you have build your site the correct way, by installing each module plugin and component individually then check / try this.
The problem for me was caused by the “optimization” of the css by the T3 framework.
Go to Templates – JA_social – GLobal Tab
Scroll down to Optimize CSS – and check it’s setting. I managed to get this to work by using Linked FIles only.
When you minify the CSS it screws loads of Http:// refs by adding an extra /
I’m sure there is a fix for this somewhere but I don’t have time to fix the code.
Just linking the CSS files seems to solve most problems.