Projects with addictive drums 2 will not open!!!!

Suddenly out of the blue, cubase 9.5 has decided it will not open any of my projects that have addictive drums 2 in them, all plugs are up to date and all maintenance updates for cubase are current??? as I use AD2 a lot you can understand my frustrations!!
Has anyone else experienced this massive pain in the bottom? I am very close to using a restore point but was hoping there is another work around as my pc is running great apart from this bloody issue.