I agree with Florian, had this happen when I had an older version of the midas.dll on my system - from Delphi XE, and my Delphi 11.2 client was picking it up, getting the same error on ApplyUpdates. I think the best way to remedy is to take away the chance of it picking up an outdated DLL and add midaslib to your projects primary uses clause.
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tclientdataset applyupdates exception - invalid parameter
in Databases
Posted
I agree with Florian, had this happen when I had an older version of the midas.dll on my system - from Delphi XE, and my Delphi 11.2 client was picking it up, getting the same error on ApplyUpdates. I think the best way to remedy is to take away the chance of it picking up an outdated DLL and add midaslib to your projects primary uses clause.