At the end of Run X.exe(the Play button) operation Eclipse asks Errors exists in project. Continue launch? but there is nothing red, no errors in project, it also compiles the project. Also if I say yes it launches the newly compiled executable with no errors.
At the end of Build Project (the wrench button) operation, it does not say errors found and also compiles successfully.
This suddenly started to happen as the project grew.
Using Windows and MinGW 4.7.2.
EDIT
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Now the error has changed. It says Errors exist in a required project. Continue to launch? Yet it still compiles successfully, and there is still no errors in Problems display.