We have new LF Servers and on WF Designer, I now have version 10.4.2.121. I am trying to install a Custom Activity in the WF Toolbox and am getting the error attached. I am having to update my Custom Activities for the new servers. One of them installed OK, but this one refuses to go.
I used .NET Framework 4.5.1 to compile the updated programs. The message talks about sandboxing and old releases of .NET, which does not help me. Also it says I can "unblock" the file from Properties. I do not see that button.
Anyone had this problem? Know what to do?
Thanks in advance for any help.