Modelsim: Module 'xyz' does not have a timeunit/timeprecision specification ..

So the original error in Modelsim is :

Module 'xyz' does not have a timeunit/timeprecision specification in effect, but other modules do.

The issue is: I have checked all the files in project, and no file contains 'timescale' directive.

But it is still complaining that other files have timeprecision. What may be the possible reason for this error?

Please note that it was working perfectly fine as it is. But then I updated my files from SVN server. And upon first simulation run it complained that. It think at the computer, from where the SVN directory was first updated, had some files that had 'timescale directive, and few files have old entries. Currently, no file in my project has any file that might be containing 'timescale directive. So, is there any cleanup I may do?