Just want to add this this.
My game runs fine with all my addons when I remove these from the dlclist.
<Item>dlcpacks:/mpsecurity/</Item>
<Item>dlcpacks:/patchday26ng/</Item>
<Item>dlcpacks:/mpg9ec/</Item>
<Item>dlcpacks:/patchdayg9ecng/</Item>
<Item>dlcpacks:/mpsum2/</Item>
<Item>dlcpacks:/patchday27ng/</Item>
<Item>dlcpacks:/mpsum2_g9ec/</Item>
<Item>dlcpacks:/patchday27g9ecng/</Item>
Once they are added back I get the CTD when trying to load story mode. It did the same thing the last update (The Contract) and I had to remove mpsecurity and patchday26ng just to get my game to run with addons. So basically run it with the new dlcs but no addons or remove the new dlcs after The Contract to run it with my addons. If that makes sense...

I am having pretty much the same issue. If you can live with it, go into your dlclist and remove mpsecurity & patchday26ng. I did that and I was able to use all my addon mods again. It sucks not being able to use the new content atm but I can at least use all my addons again.