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Good evening.

I updated to 10.11 on the weekend and everything seems to be working as expected however...

I was trying to download some software and install it. The software came in the form of a pkg file. After downloading, when I double click on it a window popups up saying "validating file..." but it just sits there. The progress bar never advances and eventually I just give up and close it. I have waited as long as an hour without any advance in the validation. At first I thought it was something with this particular software but it seems to be happening with every pkg file.

Now I did my research and the software vendors I tried all say that their product works with 10.11. Yes, I have reached out to them for comment but I would be surprised to hear a response. So what gives? Can you not install software from a pkg file in 10.11 (without disabling SIPs)?

Any insight on this would be greatly appreciated!

Thanks.