Did you try to recompile ? or redownload it from market if it's a paid one ?
Forum on trading, automated trading systems and testing trading strategies
Update of MetaTrader 5 terminals for compatibility with Windows 10 April 2018 Update
MetaQuotes Software Corp., 2018.05.02 11:17
Today, we are releasing an update for desktop terminals, which fixes compatibility issues on the latest Windows version.
We strongly recommend that you install this update.
I have recompiled it yes. It is a personal creation of mine so no need to redownload. If I open the terminal with administrator privileges the indicator will load on charts, but the same error still occurs if launched in debug mode via metaeditor, presumably because the editor then launches the terminal without admin privileges (even if the terminal is already open).
I have made a ticket. In an update to what I said earlier, admin privileges do not consistently solve the problem. It only works if I recompile the indicator after placing it on the chart (which it fails to load on initially).
I'm also experiencing serious problems.
After the update, my EA is behaving strangely and stops working.
I think the problem is the new version of MetaEditor...
I have replaced the file metaeditor64.exe from 1816 to old version until metaquotes solve the problem