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"Invalid License" help please. error when using DEMO EAs but not FREE EAs

" 2025.05.16 16:55:35.534 Core 01 2019.01.01 00:00:00 invalid license " I don't get this error when downloading a FREE EA, then testing it in the strategy tester, but all DEMO EAs that require a payment for the LIVE EA do not work and have this error. one one of the paid EAs (My own EA) I get the

2

Access Violation Error Possible Cause

The cause of this error in my case was no available RAM in my PC as it was full up and MQL5 had crashed due to this? A possible fix would be to set meta trader to the highest priority on your operating system