I have managed to run Yosemite 10.10.1 on a AMD virtualbox, for development of Safari Extensions. However after following all the steps to add the safari developer certificate go in vain and I am presented with "No Safari Developer Certificate" in the safari extensions panel. I have tried the following.
- Deleting the expired WWDR certificate and replacing it with a new one
- Marking my developer certificate as "Always Trusted"
- Running Keychain firstaid
None of the above seem to work and I still get the flashing red error "No Safari Developer Certificate". Help!