Error on exporting field contents to external drive

[argwallace]

Hello,

 

I have encountered a rather perplexing error when exporting the field contents to an external drive. When exporting locally, everything works just fine, when I do it to the external drive, it also works but FileMaker gives me the following error:

 

The file "?" could not be opened. (Not Found).

 

Any ideas?

 

Thanks,

Stephen