Well, I'm intrigued. I can't get the macro to debug like that since I put an errorhandler into the macro, it shouldn't do that at all. Here's your sheet back with the macro already installed.
If it really is doing that, I'll need more specific information about what row your "x"ing and what the value in column C is and ... well, I guess I need you to post your sheet with instructions on how to duplicate the problem.
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NOTE: The reason you can't get it to work after you DEBUG is that macros are turned off at the top of the macro and back on at the bottom of the macro. If the macro does not complete, which it should with the error handler in it, then you will need to turn macros back on.
Press CTRL-G in the VBEditor to open the immediate window.
Type this into the bottom of that window on a blank line and press enter:
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