ok, I deleted the file and the software now says:
Exporting users, please wait.. Done
To download the file, Click Here. You may also want to rename the file.
To delete the file from the server (a good idea), Click Here
When I click the download file, it opens excel, but the list is over 55k, so I get "file not loaded completely", so that is useless.
Then I look and can find no .csv file in the "attach" folder - or anywhere...