I'm not able to reproduce this.
If you bypass the Export File Choose dialog and just manually input the directory/filename does it work for you then?
>>randomly chosen file
What was the filename?
Does this happen every time, or only the once?
I had reverted back to v3 after my first encounter with v4.
But after seeing your response, I did try to replicate it and couldn't....not the overwriting part. Either manually entering a file path or using the wizard, couldn't get it to replicate the I/O Error with Single File selected.
But, with Separate Files selected, clicking on the browse button still gave me the I/O Error indicating that C:\Documents and Settings is not accessible. In my case, I don't ever use this option so it's inconsequential.
I will keep working with the single file option. I know I didn't imagine the whole file-overwrite thing.
Thanks for looking into it.