Run-time error '462' when I run macro more than once

Hello again all, I'm back again with a small problem that I'm encountering when I run the macro I have been tinkering with more than once.

I run the macro and it populates a word document for me with no problem, however when I close the test word documents and run the macro again I get a Run-time error '462'

I have done a bit of reading and I believe this error is generated by the word application not closing down and running in the background (although I'm not really very sure about how or why this would be occuring). If anyone has come accross this sort of error before or can see any glaring problems in my code I'd really appreciate a few pointers, thanks in advance. K

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the offending line is the

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I have no idea why a formatting issue would throw an error, any ideas?