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Problem with some ex4 indicators no longer working in MT4

I have recently switched my VPS host and when I loaded the MT4 onto the new server and transferred my indicators folder across I have limited ex4 indicators working. It seems random as some work but others not. My 2 custom EA's also do not work. When I drag them to chart the error message in the

Working with a MT4 EA on a mac.

Are there any restrictions to using custom indicators and EA's on Mac OS as oppose to windows 10