Last modified: 2010-05-15 15:38:23 UTC
when going to previous page in your browser,
you may arrive on a (old) previoulsly loaded page.
In this case that one that says you are probably destroying an existing image.
If you try to 'copy again',
an object is null and you get an error in line 427
Uploading new versions of files works fine for me.
If you're still encountering a problem, please:
* Give exact steps to reproduce the problem
* Provide the URL to the wiki where you're having a problem
* Provide the complete, exact error message.