Seniors and students

I also have the same problem.  I have employment income (T4) and self-employment (T2125). Data entered from T4 alone poses no REVIEW ERRORS.  However, once I add self-employment income I am getting the REVIEW ERROR CODE "CPP Contributions or Pensionable Earnings entered incorrectly.... check T4...."  
I looked into Schedule 8 which seems to address CPP on Self-Employment income but 4 pages of data calcuation is too much for me. Somewhere within this area the CPP contribution or the CPP Pensionable Earnings is corrupt and causing this error. Please review and provide a fix as I need to file my tax.