After installing the plugin, it shows up and I'm able to paste the screenshot but when I click the "attach" button I get a message box that says server returned error 500 for /redmine/attach_screenshot.
It appears that the issue is with what the uploader jar file is sending to the sever but the source code for that is not in the repository so how can I solve this?
On the server side, the stack trace looks like this:
Processing SysController#projects to xml (for 127.0.0.1 at 2012-04-11 08:48:02) [GET]
Filter chain halted as [:check_enabled] rendered_or_redirected.
Completed in 0ms (View: 0, DB: 0) | 403 Forbidden [http://localhost/redmine/sys/projects.xml?key=%5B6Ohu51BZKNTw6IV2n9U2%5D]
/!\ FAILSAFE /!\ Wed Apr 11 08:48:14 -0700 2012
Status: 500 Internal Server Error
bad content body
... [lots more snipped]