cvs problems

[Michael Thaler]

Hello,

yesterday I did a

cvs up -D "2 days ago"

because make -f Makefile.cvs did not work with the current CVS version. I 
worked on the star tool and fixed a bug and when I wanted to commit my 
changes, I now get the following error message:

cvs commit: cannot commit with sticky date for file `kis_tool_star.cc'
cvs [commit aborted]: correct above errors first!

What does this mean and how can I fix it?

Thank you,
Michael