Free plugins can't be installed

[Anders5150]

Hello community,

I got Pro Tools First and no less than 20 free plugins when I bought the SSL 2+ interface. Yay! Always a Logic user, I was happy to finally get the chance to try Pro Tools. I installed the DAW with no problems, also the 5 first plugins.

But for the rest of the free plugins I get the following message (translated from Danish): "xxxxx.pkg" cannot be opened because Apple cannot investigate whether it contains malicious software. This software needs to be updated. Contact the developer for more information."

Well, the developer, via Avid Global Customer Care, recommended I'd try to find the answer in this forum. I have searched high and low but I haven't found an answer here, nor under "First Common Issues" on the Avid site. (Still haven't tried the Pro Tools First user page on Facebook.)

Anyone else experienced this? And did you find a solution?

Any help would be greatly appreciated.