Braingap

We don't give release dates. Back when LCPDFR was in very early alpha we made the mistake of giving a release date, then failing to meet it by a few days.
The community response was overwhelmingly immature and negative. After that, we made a vow to never give release dates to anybody, not only can they not be guaranteed, but the immature uproar that follows afterword simply isn't worth it.

Go to the FIB building entrance. Choose to enter Steve Haynes mode

Oh, you've created GTA within LSPDFR within GTA, huh?
Yo dawg I heard you liked GTA...
It's nice to see the animation, though. CopHolster is a little bit "rough", to say the least. Being able to be chased just like chasing in LSPDFR will be very nice, especially for cinematics.
 

You could try using the Greatest Browser ever, Internet Explorer, see if that blocks the files. As I think it's pretty much up to Google to fix at this point.

Or, alternatively you could go into Google's settings and disable "Phishing and Malware protection" You do this by going to the top of your Google web browser go to >Settings then navigate to the bottom of the page, at the bottom there will be a blue clickable link called "show advanced settings" clicking it will open the page further with more options and navigate further down the page to where it says "privacy" in that section you will have a check box with the aforementioned option to opt out of. Disable the protection, close the page and download what you need to, enable it after you choose to and or leave it as is. 
I'm assuming there is a similar method to get around this for Firefox as well.