SysUtils module was compiled with a different version of SysConst.SMonitorLockException when trying to compile a project in Delphi 2009
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This error occurs when you mix libraries. You may be using a (third party) library that is compiled with a different version. Try to get the latest version or recompile if you have the source.
If the issue persists, try to get a minimal subset of the project to find the offending / dcu file.
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